You can use custom reports to build a report on the specific adoptions performed by your adoption counselors.
If you need a refresher on custom reports, here is a helpful article explaining how to run custom reports.
Start by creating an "Events" report on "Outcome" and select your time period. Then select "Add Rule" and "Customize Report Columns". You can now customize the animal information and outcome information report columns. Make sure you select "Adoption Counselor".
After you run the custom report and export to Excel you will want to use Excel filters to do a quick count of each adoption counselor.