Touchbar buttton exists in the app, does that mean I can use it in btt?

I'm attempting to move the 'activity' button from forklift ftp app that handily displays the progress bar of my current download on the touch bar, I'd like to create a button for that in btt so that it stays on the touchbar while I do other things.

Is this kind of thing possible? I'm new to macos so I have a feeling I'm being a delusional ex-linux user. I checked the script library of the forklift app and there's nothing useful there.