I got a few questions?

Does the "protagonist" have to be visible in game? I
dea of a game where you are controlling your whole kingdom from kings point of wiew. You are just isuing orders which are caried out by your units. These units aren't even rendered in the game as the king isn't able to see them when they are on the other side of the kingdom.

Can I make a game where I as a captian controll the ship by simply isueing orders like (turn left, turn right, set heading to, hoist all sails, fire port cannons, etc.)?

How much autonomy could my "protagonists" have? Can I make a game where my characters are compleetly autonomus (I don't even need to isue any commands)?