No it's you who are misunderstanding how the game is played Seraphyna.
You are looking for a word that fits with calls now.
From attendant
physician to
physician clinic
Then from physician
clinic to
clinic duty
Then clinic
duty to
duty calls.
So now we need something to fit with calls, so I will say:
calls over and the next person will need something to fit with the word over...
It can be confusing when you're new to a game, so now I've explained I hope you still want to play.

So calls over and the next person will say????
Darke.