Change TCC command prompt using XDIR

In the introduction of XIDR it says "XDIR will (optionally) change the TCC directory to the selected XDIR directory". Online help describes in more detail "If the selection is a directory, XDIR will change the listbox to display the contents of that directory. A Ctrl-Enter will also change the TCC default directory to the selected directory."

I have not managed to do this. Ctrl-Enter does absolutely nothing. What am I doing wrong?

Support to also change the drive via XDIR would be great.