hi,
it was just an example, 4 fifth of Tehran FIR is under radar coverage and at the same time there is a controller and an assisstant working in each of 7 sectors, the capacity of which is usually near the limit. but the structure of the airspace is so that in some sectors 4 fifth of traffic is combined in one side of the sector and only 1 fifth is on the other side. my question is that "is it possible to provide radar service in one part of a sector and procedural service in other part?"