I don't use macros because they're frustrating to use.

BUT, there is 2 macros to help me manage my hotbar for SAM.

AoE:
/micon Ôka
/hotbar action "Fûga" 1 1
/hotbar action "Mangetsu" 1 2
/hotbar action "Ôka" 1 3

Single Target
/micon Hakaze
/hotbar action "Hakaze" 1 1
/hotbar action "Jinpû" 1 2
/hotbar action "Gekkô" 1 3

Those two change your 1 2 3 between aoe and single target.
I find it usefull since you barely use your AoE GCD anyway and since it's instant, there is no downside.