Are you wondering why some functions are not possible because the button you want to use is greyed out?
This is usually because your permission access is at a lower level than you need.
Here is how User Roles are arranged in AA: User Roles
Only more senior roles can allocate an access level for you of "Account Member" and/or "Register User" or higher.
If you need higher privileges, contact your manager or the AA account Owner and ask them to increase your access level.
See also: Granular User Role permissions and privileges to determine what level of access to AA you require.