In the case where an entity is used by several parishes with the same priest, it is common for as many linked entities as parishes concerned to be defined. In managing activities, it is often useful to know if a person or person registered in a group/event is attached to one of the parishes in the lot. However, today it is not possible, with an additional group or person field, to associate a person or their registration with a linked entity. Is it possible to create a new type of additional field (person and group) capable of listing the linked entities of the active entity and offering them for selection (simple or multiple)?
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