Technically, the work in a group starts with the request of one person - a client, with the participation of other people of the group as substitutes, similar to the process of family constellations. After completing the work, the client becomes a member of the group and can participate as a substitute for other participants. Within one group a client can work through several issues by working as a client first, by substitute in the therapy of another client, or simply by observing the work of others and through resonance with their issues.