I use Windows Task Scheduler to run a DMT daily. But the windows task specifies a PowerShell(PS) script to run at a certain time each day.
You could make a PS script, that checks for the existence of a file and the if it exists, the call DMT via the command line, and then delete the file. This PS script could be scheduled to run every 5 minutes.
Looking for something like that?
edit
And here’s a lengthy topic on DMT and PowerShell
and FWIW - I struggled with how to use quotes in a string that is referenced by another string.