You can delete a user if the user has not done anything yet; however, you can set a user to expire.
To delete an existing user account:
1.Open Application Security from the Desktop.
2.Select the Users tab.
The Users|Search page appears.
3.Search for and select the user that you want to delete.
The Users|Basic page appears.
4.Select 'Delete' from the 'More Options' menu (⋮)
A window prompts you to confirm the deletion of the user.
5.Click 'OK'.
A window confirms that the user was deleted.
6.Click 'OK.'
