Use ALLOW_COORDINATOR_AS_MEMBER option of the root logical server policy to control the coordinator's eligibility to participate in a user-defined logical server. Set the option to OFF to prevent coordinator from being used as a member of any user-defined logical servers. The default setting is ON.
You can define logical membership of the coordinator as well as named membership to the current coordinator server even when ALLOW_COORDINATOR_AS_MEMBER is set to OFF, but these memberships will not be effective.