First things first
Set a name, then one PIN — share it with whoever needs to log visits.
No visits logged yet
Drag a visit to change its time. Tap one to edit everything else.
This unlocks adding and editing on this device.
Locked out or starting over?
Pick the first and last day, then choose morning, evening, both or neither for each day in between — so you can skip a day entirely if no visit's needed.
Pick the days and times — this creates one entry for each, which you can still move or delete individually afterwards.