@timconsidine you can toggle visibillity for apps that have their own user management. If you use an SSO app, there is "user management" which manages access (and therefore an visible dashboard icon) but "dashboard visibility" is missing from the menu. Its well explained in the documentation.
I guess what you could do is remove access for an user (within Cloudron), put the user inside a group X that has no access to said app and set up SSO manually within the app to grant access to users within group X.
Basically, I want the "dashboard visibility" options to be available for all apps. To not make Cloudrons UI confusing, a "Hide for non admins/operators" checkbox would be fine.