Universal Remote Card - Buttons, Touchpads, Sliders, and Keyboards for Multiple Platforms

I’m trying to get this set up for my SamsungTV. I was using the TV Remote Card but this seems to have a few limitations - and also looks abandoned.
With the other remote, I was able to add buttons to go immediately to a particular channel. I used the following code to do this:

  bbc_1:
    icon: mdi:numeric-1-box
    service: media_player.play_media
    service_data:
      entity_id: media_player.kitchentv
      media_content_id: '101'
      media_content_type: channel

I’m not sure how I would add that to this remote though.

Also - selecting a source doesn’t seem to function either. Not sure what is going on there!