diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/CreateEvent.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/CreateEvent.cs
index bcb0ab00a..13fc9bc4b 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/CreateEvent.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/CreateEvent.cs
@@ -12,6 +12,7 @@ public class CreateEvent : ICommand
         public string Name { get; }
         public Guid OrganizerId { get; }
         public Guid OrganizationId { get; }
+        public Guid RootOrganizationId { get; }
         public string StartDate { get; }
         public string EndDate { get; }
         public string BuildingName { get; }
@@ -27,15 +28,16 @@ public class CreateEvent : ICommand
         public string Category { get; }
         public string PublishDate { get; }
 
-        public CreateEvent(Guid eventId, string name, Guid organizerId, Guid organizationId, string startDate, 
-            string endDate, string buildingName, string street, string buildingNumber, string apartmentNumber, 
-            string city, string zipCode, IEnumerable<Guid> mediaFiles, string description, int capacity, decimal fee, 
-            string category, string publishDate)
+        public CreateEvent(Guid eventId, string name, Guid organizerId, Guid organizationId, Guid rootOrganizationId,
+            string startDate, string endDate, string buildingName, string street, string buildingNumber, 
+            string apartmentNumber, string city, string zipCode, IEnumerable<Guid> mediaFiles, string description, 
+            int capacity, decimal fee, string category, string publishDate)
         {
             EventId = eventId;
             Name = name;
             OrganizerId = organizerId;
             OrganizationId = organizationId;
+            RootOrganizationId = rootOrganizationId;
             StartDate = startDate;
             EndDate = endDate;
             BuildingName = buildingName;
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/Handlers/CreateEventHandler.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/Handlers/CreateEventHandler.cs
index 13f82c327..1c7e67580 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/Handlers/CreateEventHandler.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/Handlers/CreateEventHandler.cs
@@ -70,7 +70,7 @@ public async Task HandleAsync(CreateEvent command, CancellationToken cancellatio
                 state = State.ToBePublished;
             }
             
-            var organization = await _organizationsServiceClient.GetAsync(command.OrganizationId);
+            var organization = await _organizationsServiceClient.GetAsync(command.OrganizationId, command.RootOrganizationId);
             if (organization == null)
             {
                 throw new OrganizationNotFoundException(command.OrganizationId);
@@ -81,8 +81,7 @@ public async Task HandleAsync(CreateEvent command, CancellationToken cancellatio
                 throw new OrganizerDoesNotBelongToOrganizationException(command.OrganizerId, command.OrganizationId);
             }
             
-            var organizer = new Organizer(command.OrganizerId, identity.Name, identity.Email, 
-                command.OrganizerId, organization.Name);
+            var organizer = new Organizer(command.OrganizerId, identity.Name, identity.Email, command.OrganizationId, organization.Name);
             var @event = Event.Create(command.EventId, command.Name, command.Description, startDate, endDate, 
                 address, command.MediaFiles, command.Capacity, command.Fee, category, state, publishDate, organizer, now);
             
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/SearchEvents.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/SearchEvents.cs
index 96f8ea8fa..6683882bd 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/SearchEvents.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Commands/SearchEvents.cs
@@ -9,6 +9,8 @@ public class SearchEvents : ICommand
     {
         public string Name { get; set; }
         public string Organizer { get; set; }
+        public Guid OrganizationId { get; set; }
+        public Guid RootOrganizationId { get; set; }
         public string Category { get; set; }
         public string State { get; set; }
         public IEnumerable<Guid> Friends { get; set; }
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Services/Clients/IOrganizationsServiceClient.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Services/Clients/IOrganizationsServiceClient.cs
index 49d592182..ca0e95aa5 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Services/Clients/IOrganizationsServiceClient.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Application/Services/Clients/IOrganizationsServiceClient.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using MiniSpace.Services.Events.Application.DTO;
 
@@ -6,6 +7,7 @@ namespace MiniSpace.Services.Events.Application.Services.Clients
 {
     public interface IOrganizationsServiceClient
     {
-        Task<OrganizationDto> GetAsync(Guid id);
+        Task<OrganizationDto> GetAsync(Guid organizationId, Guid rootId);
+        Task<IEnumerable<Guid>> GetAllChildrenOrganizations(Guid organizationId, Guid rootId);
     }
 }
\ No newline at end of file
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Core/Repositories/IEventRepository.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Core/Repositories/IEventRepository.cs
index 915ab0261..d172c4481 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Core/Repositories/IEventRepository.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Core/Repositories/IEventRepository.cs
@@ -16,8 +16,8 @@ public interface IEventRepository
         Task<bool> ExistsAsync(Guid id);
         Task<(IEnumerable<Event> events, int pageNumber,int pageSize, int totalPages, int totalElements)> BrowseEventsAsync(
             int pageNumber, int pageSize, string name, string organizer, DateTime dateFrom, DateTime dateTo, 
-            Category? category, State? state, IEnumerable<Guid> friends,  EventEngagementType? friendsEngagementType,
-            IEnumerable<string> sortBy, string direction);
+            Category? category, State? state, IEnumerable<Guid> organizations, IEnumerable<Guid> friends, 
+            EventEngagementType? friendsEngagementType, IEnumerable<string> sortBy, string direction);
         Task<(IEnumerable<Event> events, int pageNumber,int pageSize, int totalPages, int totalElements)> BrowseOrganizerEventsAsync(
             int pageNumber, int pageSize, string name, Guid organizerId, DateTime dateFrom, DateTime dateTo,
             IEnumerable<string> sortBy, string direction, State? state);
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/EventMongoRepository.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/EventMongoRepository.cs
index c508829ee..a6b084d3c 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/EventMongoRepository.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/EventMongoRepository.cs
@@ -53,14 +53,15 @@ public async Task<IEnumerable<Event>> GetAllAsync()
         
         public async Task<(IEnumerable<Event> events, int pageNumber,int pageSize, int totalPages, int totalElements)> BrowseEventsAsync(
             int pageNumber, int pageSize, string name, string organizer, DateTime dateFrom, DateTime dateTo, 
-            Category? category, State? state, IEnumerable<Guid> friends, EventEngagementType? friendsEngagementType,
-            IEnumerable<string> sortBy, string direction)
+            Category? category, State? state, IEnumerable<Guid> organizations, IEnumerable<Guid> friends, 
+            EventEngagementType? friendsEngagementType, IEnumerable<string> sortBy, string direction)
         {
             var filterDefinition = Extensions.ToFilterDefinition(name, dateFrom, dateTo)
                 .AddOrganizerNameFilter(organizer)
                 .AddCategoryFilter(category)
                 .AddRestrictedStateFilter(state)
-                .AddFriendsFilter(friends, friendsEngagementType);
+                .AddFriendsFilter(friends, friendsEngagementType)
+                .AddOrganizationsIdFilter(organizations);
             var sortDefinition = Extensions.ToSortDefinition(sortBy, direction);
             
             var pagedEvents = await BrowseAsync(filterDefinition, sortDefinition, pageNumber, pageSize);
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/Extensions.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/Extensions.cs
index 1bb098ac5..8324e2886 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/Extensions.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Mongo/Repositories/Extensions.cs
@@ -163,6 +163,18 @@ public static FilterDefinition<EventDocument> AddFriendsFilter (this FilterDefin
 
             return filterDefinition;
         }
+
+        public static FilterDefinition<EventDocument> AddOrganizationsIdFilter(this FilterDefinition<EventDocument> filterDefinition,
+            IEnumerable<Guid> organizationsEnumerable)
+        {
+            var organizations = organizationsEnumerable.ToList();
+            if (organizations.Count > 0)
+            {
+                filterDefinition &= FilterDefinitionBuilder.In(x => x.Organizer.OrganizationId, organizations);
+            }
+
+            return filterDefinition;
+        }
         
         public static FilterDefinition<EventDocument> AddEventIdFilter(this FilterDefinition<EventDocument> filterDefinition,
             IEnumerable<Guid> eventIds)
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/Clients/OrganizationsServiceClient.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/Clients/OrganizationsServiceClient.cs
index 60d490d8f..e28ce9688 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/Clients/OrganizationsServiceClient.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/Clients/OrganizationsServiceClient.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Convey.HTTP;
 using MiniSpace.Services.Events.Application.DTO;
@@ -17,8 +18,11 @@ public OrganizationsServiceClient(IHttpClient httpClient, HttpClientOptions opti
             _url = options.Services["organizations"];
         }
         
-        public Task<OrganizationDto> GetAsync(Guid id)
-            => _httpClient.GetAsync<OrganizationDto>($"{_url}/organizations/{id}/details");
+        public Task<OrganizationDto> GetAsync(Guid organizationId, Guid rootId)
+            => _httpClient.GetAsync<OrganizationDto>($"{_url}/organizations/{organizationId}/details?rootId={rootId}");
+
+        public Task<IEnumerable<Guid>> GetAllChildrenOrganizations(Guid organizationId, Guid rootId)
+            => _httpClient.GetAsync<IEnumerable<Guid>>($"{_url}/organizations/{organizationId}/children/all?rootId={rootId}");
 
     }
 }
\ No newline at end of file
diff --git a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/EventService.cs b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/EventService.cs
index 05aff43b4..8bf6ffa56 100644
--- a/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/EventService.cs
+++ b/MiniSpace.Services.Events/src/MiniSpace.Services.Events.Infrastructure/Services/EventService.cs
@@ -7,6 +7,7 @@
 using MiniSpace.Services.Events.Application.DTO;
 using MiniSpace.Services.Events.Application.Exceptions;
 using MiniSpace.Services.Events.Application.Services;
+using MiniSpace.Services.Events.Application.Services.Clients;
 using MiniSpace.Services.Events.Application.Wrappers;
 using MiniSpace.Services.Events.Core.Entities;
 using MiniSpace.Services.Events.Core.Repositories;
@@ -17,12 +18,15 @@ public class EventService : IEventService
     {
         private readonly IEventRepository _eventRepository;
         private readonly IEventValidator _eventValidator;
+        private readonly IOrganizationsServiceClient _organizationsServiceClient;
         private readonly IAppContext _appContext;
 
-        public EventService(IEventRepository eventRepository, IEventValidator eventValidator, IAppContext appContext)
+        public EventService(IEventRepository eventRepository, IEventValidator eventValidator, 
+            IOrganizationsServiceClient organizationsServiceClient, IAppContext appContext)
         {
             _eventRepository = eventRepository;
             _eventValidator = eventValidator;
+            _organizationsServiceClient = organizationsServiceClient;
             _appContext = appContext;
         }
 
@@ -33,6 +37,7 @@ public async Task<PagedResponse<IEnumerable<EventDto>>> BrowseEventsAsync(Search
             Category? category = null;
             State? state = null;
             EventEngagementType? friendsEngagementType = null;
+            IEnumerable<Guid> organizations = new List<Guid>();
             if(command.DateFrom != string.Empty)
             {
                 dateFrom =_eventValidator.ParseDate(command.DateFrom, "DateFrom");
@@ -54,11 +59,16 @@ public async Task<PagedResponse<IEnumerable<EventDto>>> BrowseEventsAsync(Search
             {
                 friendsEngagementType = _eventValidator.ParseEngagementType(command.FriendsEngagementType);
             }
+            if (command.OrganizationId != Guid.Empty && command.RootOrganizationId != Guid.Empty)
+            {
+                organizations = await _organizationsServiceClient
+                    .GetAllChildrenOrganizations(command.OrganizationId, command.RootOrganizationId) ?? new List<Guid>();
+            }
             (int pageNumber, int pageSize) = _eventValidator.PageFilter(command.Pageable.Page, command.Pageable.Size);
             
             var result = await _eventRepository.BrowseEventsAsync(
-                pageNumber, pageSize, command.Name, command.Organizer, dateFrom, dateTo, category, state, command.Friends,
-                friendsEngagementType, command.Pageable.Sort.SortBy, command.Pageable.Sort.Direction);
+                pageNumber, pageSize, command.Name, command.Organizer, dateFrom, dateTo, category, state, organizations,
+                command.Friends, friendsEngagementType, command.Pageable.Sort.SortBy, command.Pageable.Sort.Direction);
             
             var identity = _appContext.Identity;
             var pagedEvents = new PagedResponse<IEnumerable<EventDto>>(result.events.Select(e => new EventDto(e, identity.Id)),