To file amendments for existing registrations, find and open the record through the "Search" tab in the Business Filing Services portal and request access. (b) Filing and posting.PAR's Buyer Agency Contract includes all of the legallyrequired language and allows for a buyer's broker fee to be structured in several ways. Of course, the easiest way to ensure peace of mind is to hire competent legal counsel with experience in the liquor laws of Pennsylvania. This Agreement will then be filed as part of.