As others have said, I think Stevens will rotate starters into 5 man groupings with the bench to give the highest quality of play across all 5 man groupings. If Stevens uses a 10 man rotation, I seriously doubt we will see all the starters out and all the bench guys into unless it's the 4th quarter of a blowout.
I could easily see Brown and Tatum playing lots of the 2nd and 4th quarters with both starters and bench players and see players like Smart, Morris, Baynes, Rozier, and Ojeleye get switched in the 1st and 3rd quarters to get run alongside Hayward, Kyrie and Horford.
That way all 4 main scorers Kyrie, Hayward, Brown and Tatum will be able to get the most good shots possible.