The 4th pot on HUI template 1 allows you to access the HUI Zoom, Navigation and Selection modes in Protools. It should be noted however that Selection Mode requires the presence of a jog/shuttle wheel in order to make selections within Pro Tools. HUI was originally intended to perform many functions that could be carried out with a mouse and Keyboard, however, most Pro Tools users found that using the mouse/keyboard to be a far easier way to make selections than using the 'Selection Mode' in HUI. This combined with the lack of Jog/Shuttle wheel on the ReMOTE SL has meant that the Selection mode is unsupported on the ReMOTE SL