Add Profiles info

admin-guide/qgis/managing-qgis-projects.md

@@ -110,6 +110,24 @@ When you're done, remember to [enable any layers for WFS](/admin-guide/qgis/conf
 
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+## Assign Profiles
+
+Pozi "profiles" are a way to present different experiences to different users within your organisation.
+
+Any given map catalogue can be assigned zero or one or more profile names in the QGIS project using a keyword parameter. If Pozi is launched with a profile parameter in the URL (eg `../#/profile[assets]/`), Pozi will display only those catalogues that have been configured with that profile name (as well as any catalogues that haven't been configured with any profile names).
+
+The keyword is defined at the catalogue level (ie, not layer level). When Pozi loads the catalogue, it checks for the presence of any profile keywords. If any profiles are found, Pozi will add a dropdown menu at the top of the layer panel that shows the available profiles.
+
+Project > Properties > QGIS Server > Services Capabilities > Keyword list
+
+Example: `profiles=Assets;Infrastructure`
+
+(Separate multiple profile names with semicolons.)
+
+When Pozi is launched with a profile specified in the URL, enable only the catalogues that don't have any profiles specified or which contain a matching profile name. Users can still switch profiles using the dropdown menu at the top of the layer panel.
+
+If there are catalogues that you *don't* want to appear in the Assets profile, assign them with at least one profile, for example `profiles=General`.
+
 ## Test Project Load Performance
 
 The speed at which Pozi can access layers from the QGIS project is limited by how fast QGIS can access the layers from their respective data sources.