You can adjust the software....
I usually shoot right handed, but back when I 3 gunned there were stages where shooting sinistrally were either mandated or a good idea.
Shooting a standard 870, it's easy for my thumb to move far enough to touch the safety as needed and slide back to the firing position. The left index finger can put the safety on easily.
I've taught some students this and some have it down immediately and some never can. Best to try it, though and see if it works for you.....