Yes on shift pattern
I keep the rear in 3rd & do all "Shifting" with the front.
You can do just the opposite & have the same results.
3rd is "straight thru" ... so either tran in 3rd will act like it has just one tran.
2nd / 2nd will give you "a different gear"
1st / 1st will give you "creeper gear"
Rev / Rev will make it go forward.