With Playbook Wizard you don’t have to create two different formations for formations that are “mirrored”. If your Strong I Right formation is just a horizontally flipped version of Strong I Left you can just create Strong I Right, name it “Strong I”, then flip the formation before you share it to create a new play.

If the play is the same to the left and to the right then you don’t need to create two versions of the play either!  Plays are also flippable so anyone viewing the play can see it going right and left without you needing to create two different plays.

Of course nothing is stopping you from creating individual Strong I Right and Strong I Left formations along with a version of the same play for each formation. Just remember that you don’t have to if you don’t want to!