CB.13:5.3 - Local autonomy has an interface for shared effects
Two local volunteer groups independently schedule their own case meetings. They share a limited pool of mentor time. Their common arrangement governs only allocation of that time and how unmet requests return; ECO.7 helps construct the feasible use and upkeep rules.
One group can change its meeting format locally. It cannot reserve all mentor time merely because it needs more sessions. That request goes through the common allocation and its actual capacity limits. Free copying of the groups’ reference notes is not restricted by the same rule: the constrained contribution is mentor time.
If the common body begins directing unrelated local topics, either group can challenge that expansion through the adopted route. A new common subject requires the appropriate amendment, not merely repeated practice.