" . . .what exactly am I able to do as a referral agent only?"
Pre-Qualify Buyers BEFORE referring them to anyone.
Obtain consent of the Referred Buyers/Sellers BEFORE referring them.
Try to convince them to only consult Brokers you refer them to
Monitor the Market for any activity by your Referred Parties.
Watch the mailbox while waiting for Checks.
Audit Brokers referred to for the Checks that didn't appear.
Take Continuing Education Courses to keep License Active.