I suppose I should've said 2 bases and 2 or 3 effect skills or some such (I was thinking solely of the effects, feel free to use as many bases as you want. Apologies, I'm not quite as familiar with the system myself).
So 2 effects, like harm, shield, coerce etc.
But yes, if it is not your NPC you need to stop and wait. You always have to stop if there is a Player around though. They need a chance to respond and do something or nothing.