Hello!
Please add as an alternative or give the opportunity to change the keyboard shortcuts to manage the layers.
I use the CorelDraw program, and it can move objects through layers, this is done by pressing Ctrl+Pgup/Pgdn to move up/down and shift+Pgup/Pgdn keys to move up/down.
The fact that the Shift and Ctrl keys are on any keyboard on the right, and the Alt key is not always present (as I have for example), hence the problem when working with one hand on the keyboard.
Thanks.