A user assigned with a team tag will automatically have the assigned permission of a creator.
These are a number of different permission types within a team tag.
Team Administrator - A team administrator can see and edit all content (maps, frames & prints) for a particular team tag. In addition they can use the invitations tab but only to invite users to their team. They can also add/remove their team tag for existing users.
Creator - A creator is the default permission assigned via a team tag. A creator can create content (maps, frames & prints) and has visibility and edit rights to content created by the team.
Editor - An editor cannot create content but can edit content created by the team.
Viewer - A viewer can only see content created by the team.
To set/change a permission on a team tag click on the team tag/tags associated with the user under the users tab. Pick the permission level you want.