Useful parental titles if you need parental titles I guess, could otherwise just call them by name? I know a couple of families that do that.

I've had some issues with one child about waiting for the answer before belting out the next one, or at least waiting for the speaker to finish before shouting demands (he did eventually work out that if he listens more sometimes the question he wants to ask gets answered) XD now we're just working on wanting to hold the floor indefinitely x_x