How do you do the creative plot thing?

Ok so i have a server. And i made another world using multiverse. And i was wondering how u make the other world "creative" actually creative?
With plots n every thing? So please post or come to my server. Also if there is a plugin i need please post it below.

Note* the serve is whitelisted so if you want to join and help me out then leave your IGN.
Thnx