In 1:n planning (more than one active work assignment linked to an order), you can define a work assignment as Key work assignment. Only a key work assignment can update the order's status.

If there are multiple work assignments linked to the order, you must decide which assigned tradesperson is the main responsible person for the order. The key work assignment must be allocated to this person, who can then can update the order information. See Main responsible engineer for more information. The 'non-key' work assignments are only allocated to resources for time registration purposes. The order details will be updated with information from these work assignments.

The field Key work assignment? can only be edited if the work assignment is in a Planned or Assigned status. This also applies in Resource planner, where the Key work assignment action on the context menu becomes read-only if the work assignment is not in the Planned or Assigned status.