How can I control YouTube and pages up or dawn

I own a MC8 , and I have a extension on Chrome that allows to use the arrows on my keyboard to forward and rewind videos and SPACE for play/pause , soo, how I can make the MC8 send a midi command and it be converted to a keyboard key stroke ? I also could use it for PAGE UP /PAGE DOWN , when scrolling tabs .

in firmware v3.8, the MC8 can send keystroke commands. So you just need to program a preset to send those keystroke commands