Group Chat like WhatsApp

Openfire Openfire Support
1

I’m using ASmack tobuild my chat App , now I want to make the groupChat like whatsApp ,

in open fire there are

1)“GroupChat” consept but it is rooms that will disappear or users will be removed from it when they logg of

  1. roster contact can be in only one rostergroup

  2. sharedGroup but user can not creat group via asmack or http

can u please help me out what is the best way to make the groupchat