Thank you for the response ... it was interesting, but didn't really answer the question I thought I asked. Perhaps I should phrase it differently.

Even if we utilized the settings the article described, and allowed a user to remain logged in for (let's say) 1 day, if part way through that day the user left the area and was still logged in and while they were gone, a need arose to use single user mode, how does the admin log out the user in order to go into single user mode? Does the admin have a way to log a user out of the system in case of needing single user mode? I would think this is something that should exist regardless of whether a user is a limited for x-number of days. Personally, I believe it would be better to limit a login to x-number of HOURS rather than days, and even an automatic log-off if the users system remains INACTIVE for an hour or so.

Is this kind of system control beyond the capabilities of the software that QuickBooks is built upon?