There is a current bug that prevents allies from staying put. You used to be able to use "Do Nothing" but they will still follow you anyway. Those set to "Wander" also have a tendency to suddenly start following you and Escorts will not exit the mission either upon reaching the door.
Thanks for clarifying that Lazarus.
Hopefully this will be looked at in a future patch to be fixed 
37 lvl 50s: 3 Brutes, 2 Stalkers, 2 Tankers, 7 Masterminds, 2 Scrappers, 3 Blasters, 3 Controllers, 3 Corruptors, Peacebringer, 2 SoA (Crab, Bane), 3 Defenders, Widow, 3 Dominators, Warshade, Fortunata
Hey guys,
I created an arc (#227722) a few weeks ago, and within the arc, I have many npc allies that are to be rescued. I set the captives to defensive status and set them to do 'nothing' when rescued. My goal was to make them buff you (emp/pain dom/therm/kin) and not to follow you, and thereby steal xp from you.
It worked great, up until one of the recent patches. Now, whenever the captives are rescused, they automatically follow you, without you even approaching them. I have double checked the settings for all the captives, and they are still all set to do 'nothing' when rescued, but they are still following.
Also, they no longer buff you as soon as they are rescued either, which they used to do.
The only time they will buff you now, is after they are attacked by the enemy npc's. Then they will fight back, and buff you on occasion, because of their 'defensive' attack setting.
Does anyone know how I can get these allies to buff and not follow again, or is it something that is permanently broken now with the AE editor?
Thanks for your help
37 lvl 50s: 3 Brutes, 2 Stalkers, 2 Tankers, 7 Masterminds, 2 Scrappers, 3 Blasters, 3 Controllers, 3 Corruptors, Peacebringer, 2 SoA (Crab, Bane), 3 Defenders, Widow, 3 Dominators, Warshade, Fortunata