Requesting permissions on iOS in runtime

I have a videocall app and I want to ask the user to accept the permissions required (camera/mic etc.) before the videocall screen.

On Android I was able to accomplish this with the Diagnostics plugin (GitHub - dpa99c/cordova-diagnostic-plugin: Cordova/Phonegap plugin to manage device settings) where there’s this method requestRuntimePermissions(). The problem is: this method only supports Android, not iOS.

Does anyone know a way I can do the exact same thing on iOS? Or this isn’t possible on iOS?

The app uses Ionic 5 with Cordova 8.