Request for User-Specific Space Provisioning in System

hi, team. not sure if this has been flagged by others: itd be great to be able to provision users to spaces (specifically) instead of just spaces for users. an example use-case is that we have contractors, that'd be love to restrict to certain spaces or agents. but right now, the only way to do that is to have all spaces include everyone BUT those contractors, which creates an administrative hassle.