Once you determine how your organization will use Tags, it is important to understand Tag Security. It is common for Arena Administrators to create Root (first level) Ministry, Serving and Event Root tags for each department and set security at the root tag. As Child Tags are created for Root tag, security cascades to child tags.
Evaluate Profile Details and Profile Tab Control modules on the Profile Member Details page, and the Profile Activity and Tag Member Activity modules on the Tag Member page. Customize as needed.