Dual Guide Creation (Horizontal & Vertical)

My thoughts are, like it is used now, via inches or a percentage but with a box you can check if you wish to add both at the same time.  It would be the same inches/percentage applied for both horizontal and vertical.

@MorgaineChristensen 

Can you explain how this would work?

Would there be a dialogue where you enter the X & Y coordinates?

Would you click on the canvas and a horizontal and vertical guide would be automatically placed? Something else?

@MorgaineChristensen have you checked out