These are optional features supported by GroupsCluster.
MatterSpecification.v13.Cluster § 1.3.4
GroupNames (GN)
The Group Names feature indicates the ability to store a name for a group when a group is added.
MatterSpecification.v13.Cluster § 1.3.4.1
These are optional features supported by GroupsCluster.
See
MatterSpecification.v13.Cluster § 1.3.4