There is a way, and it's a lot simpler than many people think.
Well, I think so anyway...
When I'm in the lead by a goal or two, I tend to do the following, even as early as half-time:
Reduce tempo to "slow"
Reduce passing to "short"
Increase width to "wide"
Increase timewasting to "mixed" (middle of slider)
The effect I find is that my team is now playing "control" football. They keep possession by playing short simple passes, making the opponent chase for the ball. Because invariably they have also changed to a more attacking formation, they will have players moving out of position to get forward, or to close down heavily trying to win the ball.
I then find my team is playing to keep the ball and knocks the ball happily around from player to player, looking for openings. When the openings appear, they're clinical in exploiting the space and creating opportunities.
I find this approach works well because I'm not changing shape and unsettling the team, player instructions stay the same and I usually always score more goals.
So as you see, keep it simple.
