Comtrol DM ATS-LNX - Manual (Page 11)

Installation and Setup 11
Webmin
3. Under the Webmin tab, select Webmin Users.
4. In the left column of the user list, select root.
5. Enter a new password in the Password field and select the Save button at
bottom of page.
Note: If you want to remove Webmin you can use the shell script uninstall-webmin.sh
found in the user root home directory. When removing Webmin (or other
packages) you can ignore warnings about non-empty directories.