This is the basic MMI structure
You would typically have around 2 minutes + any additional time gained from exiting the previous station early. The bell rings at the conclusion of a station, you exit it, and move to the next station, where the question is placed near or on the door.
The 2 min countdown starts immediately after the bell rings, so you need to move to the next station quickly! No paper is provided, it’s only thinking time. For stations with multiple questions, they ask you as the question progresses - this is why it’s in your interest to keep your answers nice and tight, i.e. not include any fluff, as they’ll simply cut you off if you run over their arbitrary time limit and this can be jarring.