Hi Mark,
You're welcome - happy customers multiply themselves

The remote control functionality works like this:
- multiple remotes can be connected to 1 iPad at a time (3 should be no problem)
- the iPad can be triggered only once at a time (makes sense, right? you can't have 2 countdowns running at the same time)
- only the remote that triggered the iPad gets a copy of the photos
- while a remote is in the process of finishing up after taking photos, ie. entering their email address, or creating a collage, they are not tying up the camera: now other remotes can use it
Please try this out and see if it works the way you want it to. For the remotes, you need any iPhone/iPod that has iOS 9 or newer. Even the crusty old iPhone 4S will work just fine.
But of course if you want to purchase the app more times, you'll have no resistance from me, or my wife & kids whom it feeds
