Per PFT: Saints switch Taysom to QB on roster designation.

So confusing to me as seems the way it’s written the 3 can’t come in the game unless 1 and 2 are hurt? Does that mean only at QB and Taysom can still play all over, no matter what? If so then I don’t mind this move at all.
By rule, it seems Winston would have to be emergency QB on gameday so Taysom can enter the game anytime at multi positions/packages while he’s listed as a QB.