Hello, @PR,
You have to create the Static Block and set the images/content under it using the page builder as per your requirements.
After that, you can set that Static Block in Mobile Menu using the HTML Block, under XStore >> Theme Options >> Header Builder >> Mobile Menu, please refer to the screenshots provided below:
https://postimg.cc/hzV7g97s
https://postimg.cc/jL1NHdKz
https://postimg.cc/nMgcTsjc
Kind Regards,
8Themes Team.