Forum:Chat Welcome Message

I saw on the Degrassi test -wiki you can have a differen't welcome message for when a User entered the chat. You know how when a user joins it says. "User has joined chat." Can you show me where I can change that.


 * MediaWiki:Chat-user-joined. --


 * Now How about exiting Chat and promoting a chat mod.
 * 125px-Nathaliaramos4.jpgm - Bureacrat/Admin of HOA wikia Talk to me! 05:25, December 5, 2011 (UTC)
 * MediaWiki:Chat-user-parted and MediaWiki:Chat-userrightslog-a-made-b-chatmod. --