Add entities to an entity group
Entity Group ID or Entity Group ForeignID
List of entity IDs or foreign IDs to add to the group
Entity ID / foreign ID of an entity currently in the group to copy users and roles from OR a boolean defining if users should be copied to the new entities.
If not provided or false, users and roles will not be copied. If true, users and roles will be copied from the first entity the group. If a valid ID is provided, users and roles will be copied from the corresponding provided entity in the group.
Note: If users copied, any preexisting users will be left alone, and users with the same foreign ID will not be copied.