On PS3 need help setting Arcanist Marco's

[Bixby]

The command for pet actions is /petaction, abbreviated /pac. So for Obey and Sic, it's:

/pac "Obey"

/pac "Sic"

Although those can optionally take a target, so you could also use placeholders, so you could have something like:

/pac "Sic" <f>

or something similar if you don't want it to just use your current target (which is the default).

You can't change gear mid-combat in FFXIV. There's the /gearset command to interface with gearsets (which you'll unlock at level 10), but unless you want to do something else at the same time as changing a gear set (e.g. turn the helmet display on or off), you can just put the gear set itself on an action bar. And regardless, you won't be doing that for single actions or anything like that.