[Information Systems Manager]

We use a Word document on our network as a place to post information to other
users about personnel out of the office or on vacation or to schedule the use
of conference rooms. The document works fine, but will only allow write
access for one user at a time. The problem is that the document frequently
is kept open by a user or the network doesn't recognize that the user no
longer has the file open.
This is stored on a Windows 2003 Server in a folder that allows everyone
full acess to files.
Can we set a time limit on the file to automatically close it after a
specified period, or is there a way to monitor the file on the server to
close it after it has been kept open for a specified time limit?
Can the file be set to allow multiple updates at the same time?