I've inherited an SharePoint 2013 instance that has a Site Collection with multiple sites beneath it. Each of these sites needs to have different users associated with it and is managed by a different person (!!) as the sites are geographically based.
I need to know what the bare minimum of permissions is required to allow for users to be added to a site.
Currently, everyone that needs to be able to add users to the sites is being added to the site collection administrators and this is a disaster waiting to happen.