The Garmin Connect IQ dev ecosystem really needs an easy way of including other users in the beta testing of an app.
Distributing .iq files via email or cloud is a real hassle via updates etc. Plus it don't test the full package.
So Garmin, please (re)consider making an [Invite] function on the Developer Dashboard. Would fit nicely "Manage You App" section on a Beta app. You can limit it to 5 or 10 users, if you see a need to do so.