Is it possible to hide the system accounts in "Users and Groups"?
Usermin doesn't have a Users and Groups module.
For Webmin, you can create a Group, grant access to the Users and Groups module, and then customize the permissions for the Users and Groups module to include only the users you want them to have access to. (Try creating the Webmin group, and see if it's not obvious how to proceed from there...if not, ask questions, and I'll go into more detail, but I suspect you'll see what I mean just by knowing the right direction).
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