forgot to report back. dragging the box in wide waterfall window does move up and down link where they need to go respectively.
since i use sdr on if tap i only use waterfall window for adjusting frequency and then i see signals move on sdr program. i do need to turn sdr on in skyroof for waterfall window to work (red light since sdr is used by HDSDR), luckily it doesnt need actual sdr to connect before populating waterfall with sats.
only thing left to say is what others have said about limited range on how much you can move frequency up and down.