Off-screen orders

When a player sends a follower off-screen to do something, resolve it with a single move (at most!). The PC won't be there to give follow-up direction when things snowball, so zoom out and pick a single move to represent the off-screen action. Resolve that one move. Let all the other things that could go right or wrong color the outcome.

If you really can't decide which move the follower is making, it's Defy Danger.

In general, have the player roll for their follower's off-screen move when the PCs could learn the outcome. If a PC leaves their follower in Gordin's Delve to spy on Mutra the Teeth, have the player roll to Seek Insight when the PC gets back to Gordin's Delve.

Sometimes, though, you want to know the results up front, so that you can weave it into unfolding events. Say the Marshal has her crew sneak around to flank a foe. You might have the Marshal roll Defy Danger right away, and then reveal the results maybe a scene or two later. "A 7, huh? Okay, cool, cool." Then, after the PCs have snuck up on the bandit camp and are about to attack: "There's a commotion to the north, and one figure drags another out of the brush. Oh crap, they've got Hari! Everyone in camp is going to see what the fuss is about. What do you do?"