Yes, you can! As i have seen from others experience it is better to use a small airport as transit in order to have all passengers for the last one. Other way it is possible that menu of your passenger to go from A to B and not from A to C.
I have a flight from A-B-C, with the idea that B (which is the small city) would get some service.
So now I have rights to transport people from A to B, A to C and also B to C.
However the only place where I can see that possibility, is the complete schedule where I can see a flight from A to C with the remark "via B".
Is that A-B-C flight priced the same as a A to C direct flight ? I cannot find a place to determine the price separately. I also do not see in route management the option to specify pricing etc for the A to B or B to C routes.
In real life I believe that this is a rather common scenario, to have a domestic via flight appear just as direct flight would (of course a bit slower Can this be done the same in AS ?