Help Creating Buttons From Remote Image

I recently purchased a Broadlink RM4 Lite in order to get some of my remote controls into Home Assistant. I have learned the commands from my Dish Network remote into Home Assistant and now want to map them. I saw a pretty cool remote frontend for FireTV remotes in HACS that pretty much looked exactly like the fireTV remote and I was able to press buttons on a “virtual” remote. I was looking to do the same with the Dish remote but have no clue where to start. I have the image below…any help would be appreciated: