Ahh.. The five finger stab.
With most switches on Airbus or Boeing looking the same, as a trainer, I always advised to push one at a time though it may take 1 or 2 seconds longer any mistake or error could be reversed. And of course, it is a good idea to check you are at the right place, not the ones nearby. Too many times I have seen the stab effect leading to the packs coming off, fuel pumps off, anti ice on at 25C etc or in the case of one A330 I flew which had been “Boeingised” by reversing the switch direction, lights off when cleared to depart and on passing 10k in the climb.
A lesson well learnt when flying the C130 with its complex fuel system: the FE would point at the fuel source, follow to where it was needed and then push the buttons. Never saw a mistake.
Me