Southfield Chamber Business Networking Group (BNG) is an business referral group that develop business contacts and share leads with the members within the group. Current BNG Chair: Brandon Sullivan, DM Payroll Services. BNG currently meet for one hour, once per month on the same day and time virtually. If you are interested in becoming a BNG member contact sullivan@dmpayroll.com cc: info@southfieldchamber.com Subject: Business Networking Group.