As you know we should write IAP based on EOP (Emergency Operation Plan) for every units and sub-units of HICS chart. Sometimes we have challenges owing to some routine work conflicts. Question is, how can manage these conflicts.
The incident commander, or leader / coordinator of your HICS , even in normal daily functioning, should be able to coordinate and command the work of all units. If this seems to be difficult or impossible, how should your system work in the stress of an incident or disaster? If this isn't possible you should think on changing the team and/or leader.