Hmn, let me make the doubt a little more specific.
When there is an instruction that is both mentioned in the team instructions and in the specific player instructions, and you set a different specific instruction than the one that has been selected for the team, does this team instruction still have some influence on the player, despite his specific instructions?
That is asked because bgsam1990 said that even if you set an ultradefensive mentality for yours DCs, if the team has an all out attack mentality, they will position themselves very high up the pitch. I have not tested this yet, but I always though that when there are contradictory team and specific instructions, the specific instructions always prevailed.