A single steering committee is appropriate for small deployments where the same group of people can review and approve all project ideas. A single steering committee is defined when a routing field is not selected.
Multiple steering committees are useful when you have several groups, such as business units, divisions, or departments, operating independently within a deployment. With multiple steering committees, ideas are routed to specific groups for approval and prioritization. Multiple steering committees are defined by a single list field in which each list value is a separate steering committee.