Depending on the depth of a unit, and its likely assignments, personnel may be categorized in these GENERAL areas: Operations, Administration, Management and Technical. Training can be placed in either Operations or Management.
Experienced emergency coordinators and radio officers soon become aware of the level of abilities required for specific OPERATIONS assignments of their communications unit participants.
Here is one way to consider it, focused around the ICS field application
For Amateur Radio Service licensees, it helps to expand your expectations of where you will be assigned. If you expect to "only operate your own equipment or only on Amateur frequencies" you may be missing out on some of the most rewarding opportunities you will ever face. There are many forms of service needed in communications situations, so being open to the possibilities brings very interesting applications of your skills -- some of which may really surprise even you!