Step 1: Notice that the dishwasher is full and that there is already a backlog of cups waiting to be washed.
Step 2: Put the powder stuff (green box marked CASCADE) in the holes on the door.
Step 3: Close the door.
Step 4: Turn it on.
Step 5: Receive heartfelt thanks and gratitudinal hugs from Amazed Mother who will probably take you for random mid-day ice cream to show her appreciation and she won’t even ask you to put the clean ones away.