Kozousch
I'm not quite sure if you didn't understand the OP's question or I didn't understand your answers correctly, but:
1) Private space has limited capabilities
Could you describe this in more detail? I'm not sure which limitations (which undoubtedly exist) are you exactly referring to?
Standard user profiles cannot run simultaneously. This is completely useless for separating private and work applications, data, etc.
I'm not quite sure what you mean by "simultaneously."
Several user profiles can run parallel in the background and you can switch back and forth between them quite quickly. Files can be shared in different ways between user profiles. This may be impractical for some but it works fine for others and I certainly wouldn't call it "completely useless'.
You activate a real secondary work profile. It runs simultaneously with the main profile. Use the Island or Insular application to activate and configure it.
If you are looking for something that behaves more like a work profile, you'll maybe find this advice helpful:
We strongly recommend it [Private Space] as a replacement for a work profile managed by a local profile admin app. It has better OS integration and isolation.
source: https://discuss.grapheneos.org/d/16670-private-space-on-android-15-grapheneos
Meph
Question, is it possible to somehow organize the apps inside the private space? Im unable to move them within
Unfortunately, this is not possible with the standard launcher as far as I know, but if third party launchers are an option for you - there are some that already support Private Space (PS), e.g.
Lawnchair
(Note: PS is at the moment only supported by Nightly Build
μLauncher
There are more, but that's the two I've tested myself.
I can personally recommend the last one - it's also available on Accrescent.