I tried to get a extra midfielder into the team by using the automatic substitutions for players who don't play.
Picked a 3-4-3 with only 2 defenders who would play that week (the 3rd defender was some 5th choice shitster from Burnley), in the hope that the unused defender would be subbed with the extra midfielder on my bench (turning it into a 2-5-3).
I probably should have googled it first.