The phrase "institution group" refers to a collection or gathering of organizations or establishments that work together or are related in some way. Full definition
He joined the bank back in 1993 as an associate in the financial institutions group, moving in to fixed income, currencies, and commodities three years later. (businessinsider.com)
The show attracted a record of 50,000 visitors, which included 150 museum and institution groups from across the world. (artefuse.com)
The Museum is a member of the Cultural Institutions Group in New York City (CIG). (bronxmuseum.org)