How to edit Jitsi Meet Main Web page

Hello there. I wanted to ask you. I want to put here in the screenshot below the google map with iframe into these spot. Please can someobody help me? Wainting for your reply

Please help me!

Here is the code: jitsi-meet/WelcomePage.web.js at master · jitsi/jitsi-meet · GitHub

Modify it, build it and deploy it.