if a team of workers is needed for the processing of a part you define multiple services in the Importer. Please see the SingleProc AF in the attached model for Plant Simulation 12.0.
What should happen if one of the workers fails during the processing time and the other members of the team can work? The available workers remain mediated if the checkbox Release when services are failed. In case of a large MTTR of the failed worker it is reasonable that an available worker of the team is doing an open job.
Please activate the mentioned checkbox and consider the simulation by the Event debugger. You will see at the event DisruptionStart that the available worker performs the small job at SingleProc A.
the behavior of the workers during a machine failure is described in the Example collection which can be started by the Start Page of Plant Simulation: Press Example Models and then click Small Examples
Category Resources, Topic Worker, Example Machine Failures
The idea is the usage the Fail control of the Importers (menu of the SingleProc Tools, Edit Controls)