How to change combo hotkeys?

[Luffs]

Can anyone tell me how to change the combo hotkeys? I play a LBD and I focus on two main combos: Multislash + Rolling Typhoon / Sunder spam + Rolling Typhoon, and then Flaming Scourge + Lightning Draw followed by Lightning Flash spam.. problem is Gon Destroyers constantly pick up the Bosses and throw them around causing the Lightning Flash to turn into Blitzblade, doing an airborne attack and messing up draw stance completely

 

Is it possible to change the combo hotkeys? I've attached a picture below to describe what i'm trying to do