Surface laptop pen configuration

Hello good peoples,

Fairly noobish and I’m trying to optimize my Surface Laptop 2 for use with the Surface pen. The default setting for button 2 on the pen is to double click and I’d like to set it up in the grease pencil settings to use the button 2 as if it were the D key for surface drawing, annotations, etc. I like to work in, ‘studio mode’ (or whatever it’s called) and can’t access my keyboard to get to the D key to draw.

Thanks so much,

Anyone? Bueller? Bueller?