On site
Check what happened here last time
Why this step
Every job page lists earlier visits to the same site: who came, when, how many openings they measured and how many they could not. If a previous visit left openings unready, those are already marked at the top of today's list — they are usually the reason you were sent back.
Checkpoint
You know before you walk in whether this is a first visit or a return, and what was left undone.