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Do you mean this RCM meeting API. If so, you can specify the meetingType=Instant to have an instant meeting and share the participant link with your user who needs to join the meeting.

Thanks for the response!
That's a nice feature to have, however, I am afraid this is not what I am looking for. This is more like creating an instant meeting and sharing the link with teams and joining.

In my scenario, I would like to develop a custom app that can join video meeting which is scheduled by a native ring central app. Having this, I probably need to get video/audio streams and also send these streams to the remote participants. Consequently, I would be able to have a custom GUI to visualize the remote participants' videos. Is this possible by any chance?