How can I get multiple people notified about changes to a user story or defect?

Discussion created by 2298506c1a6a5eb5ab12d4ea820a39a71 on Aug 26, 2014
Latest reply on Feb 12, 2015 by John_Streeter
I have a single user story or defect in Rally that I want to generate a discussion around.  We were using email to get things sorted out, but would rather use the 'discussion' tab for when we've made changes.  Is there a way to have multiple people notified about changes to this defect or user story without having to be assigned the owner (since only one person can be assigned owner).  How can I manage this communication on a case by case basis?