1. woh aa rahe honge.
2. hume nahi pata tha apne woh notice kab lagaya tha
3. maine training room mein ja ke set up kiya, jahan pe training manager ki presentation hone wali thi.( means trng. manager presentation dene wala tha)
1. They will be coming.
2. We didn’t know when had you stuck that notice.
3. I did set up in training room where training manager’s presentation was about to begin.
Anuj.k.mishra has already given answer of Q.2 correctly.
But I think You can also use “Posted” in place of “Stuck”.