Max pass and DLH ticket package

I know someone going to DL soon and they have booked a Disneyland hotel reservation through me (a brand new Disney specialized travel agent who has not used Max Pass yet) and only have their package reservation number (which includes their tickets). Is that reservation # the number she will input in the app under tickets to load them or will she need to get actual e-tickets numbers? I thought I’d check with you all because I can’t call in tonight to ask.