Roles and permissions

I will create a help desk role(s) that will effect user accounts and assign this role(s) to help desk staff located at 4 different college campus locations. I suspect multiple roles will be needed and assigned as appropriate. I am a server and site wide administrator.

Current Moodle environment: 1.9.5+
LDAP authentication
Three data feeds from ERP to create enrollments, user accounts, and courses
Hosted by Remote Learner
Cluster Environment
Serve 9 campus locations
Four campus help desk locations

Help desk staff duties:
1. Verify user account information.
2. Edit user profile.
3. If name change due to marriage / divorce / other, associate correct account to courses; delete wrong account.
4. Confirm course enrollments.
5. Limited assignment: create accounts; delete accounts;
6. Limited assignment: add users to courses / remove users from courses

If you currently have a role defined and it works well for you, I would appreciate you sharing it with me.

Thanks.
Dawn