If you want to set up user management from scratch, you should delete all users and user groups. This is recommended before you change to or deactivate LDAP, for example.
The superuser cannot be deleted. The other default users system, arisservice, and guest can only be deleted individually. They are not deleted if you include them in bulk deletion ( Remove all or
Delete, with multiple users selected at a time).
Prerequisite
You have the User administrator function privilege.
Procedure
Click User management. The list of users is displayed.
Click Additional functions.
Click Remove all. The Confirmation dialog opens.
Click OK.
All users and user groups are deleted except for the default users.