Johnny, you don't need a special key-command to drag a note, but to copy/duplicate a note (create an additional note), follow the pictures:

Attached Files (Click to download or enlarge) (Only available when you are logged in)
2017-05-19_09-08-13.jpg (25.76 KB, 87 downloads)
2017-05-19_09-08-33.jpg (19.86 KB, 87 downloads)
2017-05-19_09-08-53.jpg (21.69 KB, 87 downloads)

BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones