Logoff script on Domain for ‘select’ few users?

Hi, I have finally made a script to backup users PST files onto our file server when they logoff.

Now I know I can put this in group policy in the AD so the script/bat would run for all users.

My dilemma is I only want a select few to use this script, and I cannot specify this in AD.

It is possible to put this script in the local computer Group Policy, btut hat would mean going to each computer, which isn’t feasible…

Is there a script or process I could run for specific users in AD to input my Backup script on the local computer group policy under log off??

Hope this makes sense and many thanks for your help.