A MUN meeting goes like this:

1. Introduction of chair
2. Roll call
3. Choose topic A / B
4. Two delegates speak in favor, two speak against it. 
5. Vote in favor or against the topic
6. Open the speakers list
7. Set time limit on speeches
8. Formal debate - countries give speeches  (point of information, point of order, etc.)
9. A regional bloc introduces a resolution about the agenda topic
10. Return to formal debate - more country speeches
11. Motion for caucus time (discuss resolution)
12. Return to formal debate - more country speeches
13. Motion for informal debate (debate resolution)
14. Country introduces amendment (a change to the resolution)
15. Return to formal debate - more country speeches
16. Motion for more informal debate or caucus time (talk about amendments and resolution)
17. More amendments
18. More debate
19. Close speakers list (no countries can be added to the list)
20. Finish speakers list - more country speeches (countries may take their name off the speakers list)
21. Closure of debate
22. Vote on amendments
23. Vote on resolution
24. Return to START
25. Begin again with a different topic