Sage Timeslips

I usually click on the Reports tab >Activity >Markup Analysis to print the Markup Analysis report, but it has suddenly disappeared from the Activity group. I checked and it is not on my co-worker's computer either. Co-worker has been running Windows…

Does anyone know how to create a Report that allows me to filter only those Clients that have had no time Slip activity for over 3 months? I want to make sure that all of my Clients are being serviced regularly.