If you can sneak into the bathroom, he'll start lecturing them from the doorway, and then walk a bit further in. That's when you drop it.
Oh man that's ><, he yells at them above and then he goes down below and yells at them. I didn't realize he did the 2nd part so I kept resetting and trying different stuff because I thought the concept would be he goes to yell at the guards and they aren't there so he goes down himself and turns it off which creates the opportunity. Was way simpler!
Thanks for the tips above, starting to get a better hang of the level. Got about half the kills and found all the exits and a lot of good items. Couple more questions:
1. Is there a spot where you can snipe both targets? I see one of the rooftops has a good view of the consulate for sniper shot, but no view of the school.
2. How do you time the two passcodes to get them to meet at exactly the same time? Or will one of them just sit endlessly at the meetup spot waiting for the other?
3. How do you find an "Intern" outfit. There's a bunch of challenges related to being an intern. I knocked out a bunch of people at the consulate but can't take their outfits.
4. Where's the APC gun key? And how do you trigger the general going outside in range of it?
5. For the electrocuting consulate guy, where does this take place? I figured it'd be at the interview spot but I don't see any lighting rigs to electrocute him with?
Speaking of which, I understand not being able to steal women's clothes, but you really should be able to dress as any male character you subdue in a map. Always find it weird when certain NPCs have outfits you can't change into.
I feel like Marrakesh has a lot of interesting potential for custom targets, especially with the big crowds and all the buildings you can go into. Otoh, I think I still do like it the least of the first 3 maps because of the middle section being way too much of a maze. I like the school and the consulate is alright, but the middle is a huge maze and too much of it seems underused in the main mission (hopefully escalations and custom contracts will fix this). I enjoyed the little mini-dungeons in it like the Hookah bar and the cameraman.