How to conduct an online stream for a few people?

The challenge is how to bring in online from 4 screen (screen divided into 4 and 1/4). On one phone screen. On one webcam host. The other two people from other cities.

The problem is in the last two screens. Don't understand what prog is best to use to contact people (they are in two different places) and display them on the screen.

The only solution that comes to mind: OBS (capture of mobile, the capture of the webcam, and capture ? and ?) Here with the last two looking for a program.

How best to bring the last two on the screen? Thanks for the replies.
June 10th 19 at 14:34
1 answer
June 10th 19 at 14:36
might be useful in the service of multistreaming - https://restream.io/about

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