If you look at the tweet conversation between Looman and fr8trainshane - he says they are "working on" the ability to edit schemes -
that would mean to me that you cant currently change schemes...
but
If you look on page 7 of 12 of the Game guide it says you can adjust scheme (among other things) - I hope that you can change CCM like the guide says and Looman just mis-spoke - love to hear confirmations from others seeing there are opposing answers to this - both with solid verification behind them....