The Default Admin User
After a default installation, there is exactly one user who has access to all workspaces and functions in CORE Administration, although he is not shown as user in the Security tab settings: the admin user.
The admin user also has access to back end scripts and applications.
So he has more rights than any user that you create in CORE Administration and that you assign the Administrator role.
Depending on company security policies, you may want to keep this admin user, restrict his rights or not allow this user at all.

If you specify any superuser for CORE Administration, specify the admin user, too. If you specify other users, but not the admin user, he can still access all workspaces but will be restricted to non-superuser for all other CORE Administration functionality.
If you don't specify any superuser, no action is needed.

First create at least one Administrator in CORE Administration. If you want to split Administrators in superusers and non-superusers, add at least one Administrator to the superusers.
Then change the admin user's password, and do not forward it to anybody. Ask Recommind Support for details.
Also, replace the admin user in all back end utilities with an appropriate system administrator. Ask Recommind Support for details.