How to distinguish where the user joins in?

I found that when user joins in main room or breakout room, it will trigger the onSinkMeetingUserJoin event. How do I know where the user join in?

Hi, @lamckh0720,

Thank you for posting in the Zoom Developer Forum – I am thrilled to help here. To begin, could you please let us know which developer product you are using? It would also be helpful if you could provide a description of your requirements so that we can better understand your needs and provide guidance.

We are looking forward to your response.