Creative?

Multiworld and multiverse are the two main ways but If you want a specific zone to be creative, then when they leave they go back to survival I suggesting getting an area claiming system with flags (e.x izone/zmod) If you need any help with setting these up you can contact me in three ways
1) pm me here!
2) Email me jaredmaymon@gmail.com
3) Skype! maymonaise1

You could get a multiworld plugin, they allow you to make another world just for creative purposes.