Is it possible to add the ability to dial a number through the BT dialer from third-party automation programs (such as Macrodroid, Tasker, etc.) or to dial a number using the standard Android command from the terminal:
android.intent.action.CALL -d tel:xxxxxxx
This is not currently possible.
You must also add permission to make calls.:
<uses-permission android:name="android.permission.CALL_PHONE" />
This is about the "call" and "dial" functions:
https://www.tutlane.com/tutorial/android/android-phone-calls-with-examples
https://habr.com/ru/articles/131041/