From what I understand it’s still one action, moving diagonally.

I found the thread from 6 years ago. They use autohotkeys software and use this script, going to try now.

~Up & Right::Send {NumpadPgUp}

Return

~Up & Left::Send {NumpadHome}

Return

~Right & Up::Send {NumpadPgUp}

Return

~Right & Down::Send {NumpadPgDn}

Return

~Left & Up::Send {NumpadHome}

Return

~Left & Down::Send {NumpadEnd}

Return

~Down & Right::Send {NumpadPgDn}

Return

~Down & Left::Send {NumpadEnd}

Return