Login to MTPOS application with access of user management profile.
2. Open the user management window.
3. Select the user account that you want to activate/deactivate .
4. Click Edit. The User Information tab refreshes allowing you to edit the details.
5. Check the "User disable" checkbox, checkbox need to be checked to deactivate the user.
6. Modify the user details as per the requirement.
7. Click Save to retain the user information details.