The 'Require Password Reset' check box is in fact still in the user's Security User Profile. See the top right of the User tab after clicking on the Security User Profile link: http://www.opendental.com/manual/securityusers.html
If you still don't see it in your local Open Dental instance, let me know what version you are using and I can try and locate it for you. Our documentation is geared towards the beta version.
The best thing about a boolean is even if you are wrong, you are only off by a bit.
17.2.16 is the version I am on. The User Edit screen has an "Is Hidden" checkbox but no other checkboxes. The "Domain User" box is also not there. I didn't know if the manual image is out of date or more up to date than my version.