I have a Samsung Note 9 phone.
Sometimes I would get a call from someone while being in a call already with another person.
The person trying to call me never knows that I was in a call with someone else so don't ring back.
To the person trying to ring me, their phone rings for a bit and then goes to voicemail.
I would like to have the person trying to call me in this situation given a message saying "person in a call" or busy.
Is there a setting for this on Note 9 phone?