A scavenger hunt has two places: players are in the app on their phone, the organizer is in the web dashboard on a laptop. Mixing up those two roles is the fastest way to create confusion, so here's exactly what the organizer does, before and during the hunt.
The organizer marks out the play area on the map and writes the assignments themselves. Count on 30 to 60 minutes, most of the time goes into coming up with the assignments. That can happen weeks or months in advance.
Every submitted photo comes in to the organizer on their laptop. They decide whether an assignment was completed and approve or reject it, adding a reason if they want. They don't play along themselves, that's a role, not a spot on a team.
The organizer can add a user to help judge. Useful when the group is large, and more fun to debate that one borderline photo together.
Submitted photos are still there once the hunt is over. Save the best ones as a memory of the day.
Ten practical tips for coming up with photo assignments for your scavenger hunt, each with an example you can use right away.
Putting teams together isn't part of the app, you do that yourself. Here's how to split a group of eight to forty family members into teams that work for everyone.