How to set xbox controller in ME3 to run

Hi everyone,

I bought Mass Effect Legendary Edition a couple of days ago, and I'm currently playing ME3 (I already played 1 and 2 long time ago)

I plugged my old xbox controller to my PC and it seems to be working properly. However, I didn't understand how to set it up for certain "moves" , for example, I don't how to set the button to make Shepard running.

Could you please help figure it out? Thanks