scouts must only have 2 statistics good. that would be judging player ability and judging player potential. if you find a scout who has 19+ in both stats, apart from the fact that he will tell you a very accurate opinion about the player... he will also give you all scout results at once (usually you have to scout a player twice to get all the info)
about the assistant manager, I usually go for tactical knowledge, but most importantly, I try to get an assistant with 7/7 stars in 1 at least training domain as well.
about the assistant manager, I usually go for tactical knowledge, but most importantly, I try to get an assistant with 7/7 stars in 1 at least training domain as well.

