In order that an audit trail for each user that has access to the Merchant Administration Interface is maintained, you cannot actually delete a user - instead you must deactivate the user's login profile as follows:
1. Login to the Merchant Administration Interface and select the User Management option in the left-hand navigation bar. The Select User page is displayed.
2. The Users box contains a list of all users. Select the user you want from the list and select the Edit User button. The Edit User page is displayed.
3. Go to the Active box and de-select or remove the tick from the box.
4. Select the Save User button.
A deactivated profile will remain in the system (for records and later re-use if required), but the login credentials it contains cannot be used to login successfully.
You may not be able to deactivate all users. Your ability to do so depends on which of the manage users roles you have been assigned: for more information, refer to The Administrator and the User Hierarchy.