User Administration

1. Where do I see a list of users?
2. Will the system provide a count of users and show counts of active, inactive and locked users as well?
3. What are the headers under the user list?
4. How do I edit details of a user in the user list?
5. What should I do to change the status of the user?
6. If a user gets locked out of the system, how do I unlock?