The script has a long description in it so it may be easily overlooked. We all went through the same kind of issues when we first used it. Glad you got it working.
Yes you can search for requesters by putting requester ID in it. If you already added a panda to PC and want to pick up anything that requester posts you just have to hit details, switch the action mode from panda to search and put the requester ID in the box. Requester's ID can be found in Turkopticon if there are reviews already.