Brush tool

[Annalyse5FCB]

Hey guys, I was just wondering how I change my brush tool? I have the icon with only one brush where I want the ones with 3 to be able to remove overlays off of my object. Can someone help me out? 

 I want this tool ^  but I have the one down below

[Bojan Živković]

Can you be more precise with description what are you trying to do? Can you upload some examples?