If you want to see the list of projects a staff member has been assigned to, you can use the People Overview Report:
1. Go to Reports > Select People > Overview
2. Select the Time Period - you can set the start date to as far back as you want
4. Type the name of the person in the search bar, next to the Filter button
5. Click the mini arrow to the left of the person's name - then you should see the list of projects they were assigned to during the specified period
