Join a RESO Workgroup Choose the workgroups or subgroups that you would like to join. Broker Advisory Workgroup Data Dictionary Workgroup Distributed Ledger Workgroup Internet Tracking Workgroup Interoperability Workgroup Research & Development Workgroup Transport Workgroup Universal Property Identification (UPI) Workgroup Building Subgroup Certification Analytics Subgroup Certification Subgroup Commercial Real Estate (CRE) Subgroup Data Consumers Subgroup Fast Track Subgroup Rental Subgroup First & Last Name Work Email Title Company/Organization All fields are required.