It was the first time Dhoni looked so involved after taking off the India jersey post the ODI and T20 series against England. Obviously, Steve's the captain, but he's aware that MS has the best angle and, so, has worked with him in setting fields. It is evident on the field that Dhoni is the one who maneuvers the field and keeps the players in the right position. It allows Smith to be completely focused on bowling changes. He has too much on his plate anyway and hence Mahi bhai guides each and every player to stand in the correct positions."
Source: Times of India May 17, 2017 12:43 UTC