Flipping plays and routes is a great way to save time. You can copy an existing play, use the flip play feature and now you have a copy of the play going to the opposite side with very little extra work.
Now the play is flipped, you may need to use the Align Center method to align your play after flipping as needed.
You can also flip individual player routes, simply select a player and click the flip route button:
Now the route is flipped: