Home Assistant packages

[Madcat71]

Hi, this is more a general question buti think you guys can help.
I need to add another package in the configuration.yaml

currently it looks lik this and integrates the integration folder for the Modbus Sungrow file
but i want to add the "cheapest_hours: !include advanced_cheapest_hours.yaml" but what ever i try i get errors of all kinds, yes i am a noob at Home Assistant yaml files. tryed google but dont get me anywhere so i will ask here :D

So how is the syntax supossed to be when i want to add multiple packages, hope you understand what i am trying to do :D

works fine
homeassistant:
packages: !include_dir_named integrations

" dosent work, tryed many variants but only get errors when i check the yaml in HA
packages:
!include_dir_named integrations
cheapest_hours: !include advanced_cheapest_hours.yaml