Allow installOpen the downloaded file. If Android asks, tap Settings and turn on "Allow from this source" for your browser.
First install only: turn off Play Protect and Auto BlockerIf Play Protect blocks it, tap "More details" then "Install anyway", or turn off Play Protect scanning in the Play Store for a moment. On Samsung, also turn off Auto Blocker (Settings > Security and privacy). You can turn both back on after installing.
Open the appTap Open, log in with your email code or the login code from your admin, and allow notifications, camera and microphone.