Place your mouse pointer over the Users menu.
The Users menu options are displayed.
Click the Manage Users menu option.
The User Management page is opened.
Click the ⋮ icon in the last column for the row that represents the user that you want to deactivate.
The action menu is opened.
Click the Deactivate user menu option.
Note: This option is available only for users who are already registered and activated. It is not available for users that have been invited but are not registered.
A confirmation window is opened.
Click the Confirm button in the confirmation window.
The user is deactivated.