To install the Intune plugin, your app must be using Capacitor 3.2.0 or above. You must also have an active Ionic Enterprise install key with access to Intune.
Once you have a key and your key has been associated with your app, install the main plugin package:
In your app, run:
npm install @ionic-enterprise/intune
Then make sure to sync your platforms per the Capacitor development workflow.
When finished, follow the steps to complete the native installation and configuration for iOS and/or Android.