I have a file that only allows one user at a time to have write/update
authority (first one in locks it up); there are five people with this
modification authority. The problem is one of them opening it and then
walking away for an extended period of time and thus the others cannot input
their updates. I do not want to make it into a shared file.

Similar to my company's auto password protected screen saver (kicks on after
"x" number of inactive minutes), I would to have the file save itself and
close if a write/update user hasn't navigated in the file via keyboard or
mouse in say the last three minutes. Ideally, anyone who opened the file with
€œread only€� clearance (approximately a dozen users preset as Read Only) would
not get €œkicked out€� as they are not disrupting anyone.

Any clues / insight?

Regards,
Mike