Is it possible to unlock tracks?

we are using cubase 11 pro and VST transit to collaborate on a song.
If i am the owner of a project , why can’t my friend edit the tracks that i created ?
We are 2 composers and we need to be able to modify anything one of us does.
Any solutions ?

the lock feature is really not good. We should be able to unlock also or to assign tracks to other people in order to allow editing.

thank you