LAListenerSettingsViewController not allowing multiple assignments

[KaneBuckthorpe]

Using this settings viewController seems to refuse allowing assignments of LAListeners to any event with a listener already assigned. Trying to do so will give the message "Already assigned to ....." . It would be much more practical if this respected the other options such as exclusiveAssignmentGroups and had an approach more like LAEventSettingsController, allowing a pause or multiple assignments.