What configuration do you guys use for the express remote on programs like Photoshop or Blender?

I got a Cintiq 22 recently in a deal that came with an Express Key Remote for free. I have some digital drawing experience on Photoshop and I'm beginning to learn 3D modelling on Blender. I looked online for some configuration recommendations but there was next to nothing on it. What kind of configuration do you use for these programs?

May aswell add that the pen also has 2 keys I can modify aswell, what configuration do you have for these aswell?