In all the documentation I can''t find what permissions a space admin has. If someone is chosen as a space admin can they do any/everything? Also what does it mean if someone is given the space permission of moderate content? Does the user have to approve everything?
Space Admins have full administration access to that space. They can''t do any global items or do anything with other spaces.
Regarding moderate content--that allows users to log in and approve/reject content that is flagged for moderation within that space.