[REQUEST] What addons are used for events on things like StarwarsRP

I am working on server that is similar to starwarsRP, and when I say similar I mean like there is training needed at the beginning and there are rankings and promotions and such and I plan to also have events. While playing on a star wars RPserver, every once in awhile they would have a big event where the map changes and your teams fightsAI droids and AI vultures, etc. Once the fighting is complete, the map will change back to the main server map where people will meet back to a certain area and a high-ranking leader gives out promotions for certain really good players. I wanted to know if there are add-ons that exist where I can do these similar events.

I'v only really played Star Wars RP a few times and one of the main servers were IceFuse.com, and they would host all their servers on a dedicated box and when an event is announced everybody was asked to switch to the other server, "Event Server". But In regards to this addon, I'v never actually heard of this being done, and sorry if this didn't help you at all.

mmm.. I don't know..