Set another person to list as an owner of a world along with you. They have full owner rights.
The collaborations could show up under a different spot of profile.
Both people must consent to add a world to collaboration, a world cannot be un-collaboration-ed, a world cannot be placed in a collaboration if it is in crew, only two people can be in a collaboration.
Basically because two person collabs seem pretty common and it seems pointless to have a crew for every one of them.
bleh who needs sigs anyway.
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