I discovered that the bottom right button is disabled by default.
I didn't notice this as I had a 'hidden' modification to enable it.
It was experimental, that is why it is disabled. I could show you how to enable it, if you wish to try it,
OK
In your configuration folder (or the sim folder if you want to test there) there will be a set of folders qtvcp/screens/qrdragon/
in that last folder add the file i have provided. name it qtdragon_handler.py
When you run the config, there should be an entry in the status page about a customization.
The button should be clickable after that.