Does Native Library Support Master Client and Host Migration?

Hi Photon Team,

I read https://doc.photonengine.com/en-us/realtime/current/reference/hostmigration .

I have 2 player in game A and B.

When MasterClient A lost connection the room been closed.

B is not became MasterClient.

1. Do I need some setting in code?
2. What is the equal function "PhotonNetwork.SetMasterClient()" in c++ libray?

Thanks for your help!