This sounds to me like a violation of the EULA. You probably need InDesign Server for this.
Our plan is, we are going to do this task in separate machine by giving access to the other users.
you could use idleTasks in Indesign > 5.0 to run sheduled Tasks from within ID. It's well explained in the scripting guide!
launchd could be used on Mac Os to perform sheduled tasks from operating system.
as far as I remember there is a WMI-class Win23_ScheduledJoB for VB-Script.http://msdn.microsoft.com/en-us/library/windows/desktop/aa394399%28v=vs.85%29.aspx
third party software for example Mac: Hazel Win: Directory Monitor (Give google a chance )