Right now bronze 3 (got into silver and becuase of some bad fortune went back down) and was wondering whats the best way for finding groups in my rank to trio queue with in comp?

I was watching a Teaching Valo stream and in the POV of the one being coached, they had this dot on top of everyone's heads and I wanted to have that too since I'm also learning but I cant find it in the settings, where is it??