How to build a UI extension to start WebRTC calls?

Hi, Cisco Community.

I have a WebRTC application. I want to build a UI extension, using Macros or something else, to be used on Cisco screens. This UI extension will have, as an example, a field to enter the meeting ID and a button to join the meeting hosted on my WebRTC application. This UI extension could use my API to check for example if the meeting exists or not, etc. After joining the meeting, I want this UI extension to use RoomOS’s UI or a custom UI/Frame to show the meeting.

– Is this possible?

– If yes, how?

Examples about the above request, but the below Macros are using SIP:

– RoomOS for Collab Devices (cisco.com)

Used screen: Desk Pro.

RoomOS version: Latest version.