Hi Kathleen! You'll want to make a Notification for this - Set Up Notifications | CA Agile Central Help. I created mine to tell me about any Defect where the Creation Date changed, which only happens the first time a defect is created:
You'll have to have each member of the Team make their own notification, or make an Agile Central login that uses the team's address and has the rule.
Let me know if you have any troubles getting it set up, and have a great day!