We have our main Sharepoint site and then setup sites from there for clients.
We need to give clients access to setup lists and libaries for their site.
However the problem is that when they create a field in the list for 'People or Group' then there is a 'Choose From' option and you have two choices - 'All Users' or 'SharePoint Group'.
If you select 'SharePoint Group' and then the client will be able to select 'More...' whereby ALL groups for the whole of our Sharepoint sites including other client groups are displayed and able to be selected. Is there a way you can restrict this access in permissions to only view the client site groups and not all groups for the entire sharepoint site and all subsites - so the 'more...' option is removed.