idk if this is a good way to do it, but what i do is i build the wall (b+w) then i set my ralle point (right click) then i box the building, press esc (box+esc) Then i select my builder, either by boxing or pressing 1(box/1) Repeat
so pretty much, its b+w+set rally point+box+esc+1/box
good or bad?
EDIT: The other one is definitely good, im just not used to it yet, i screw up time to time/my finger are not used to do the action
I use this method as sat or when wall walking with fruit trees in HIGH delay, hard to wall walk like this with multiple enemies.