First decide which bowler is going to get all 10 wickets. Then as soon as he gets the first, save the game. The reason being sometimes you'll get run outs or stumping with other bowlers when you don't mean to, or accidentally forget who's bowling and catch a catch.
Every time your elected bowler gets another one towards the 10, save. It's a great feature, this save at any point save; use it to your advantage :)
Also: select an Ashes match, since you don't want your elected bowler running out of overs before he gets his wickets :)