I am trying to use transform tool on Cintiq ( first of all, it is inconvenient to press Ctrl+R and Ctrl+T on touch keyboard or aim tools icons ).

How can I apply transformation? "Enter" key on touch keyboard does not work, just ignored. "Apply" button in "Tool options" menu works, but using button in docker is not convenient.
What is recommended way to use "Transformation tool" on touch table like Cintiq, to avoid screen keyboard (and reduce hardware keys spending)?

V: 2.9.11 / Wacom Cintiq Companion2 / Windows8

I have mapped selection (outline selection aka "Lasso") and transform (Ctrl+T) hotkeys to on-screen panels.

But still there is a problem with 'Enter' key.

If I map hardware button to Enter, it works. But this seems too wasteful to spend one hardware key just for apply transformation button (why Wacom can't add 20 more button...)
If I map on-screen panel button, it does not work too.