Oops didn't read, the post above already explained the bind keys. The only thing I can add is in the last other menu to scroll down to see all the options. I set mine to "B" I think so I would remember Browse whenever I ran past someone.
On a side note if a key is already assigned to a function you have to first select another key for that function to free up that key. Kind of a inconvenient process they should really just make it swap keys, but oh well.