you could set up an issue security scheme (https://confluence.atlassian.com/display/JIRA/Configuring+Issue-level+Security).
Use a default security level with group A( the group to see all issues) and assignee.
You add a security level to issues not to groups. Within a security level is defined who can see an issue, so in your case you would add to this security level the Group A and the issue role assignee. In order to see an issue with this security level you must be in Group A or you must be the assignee. Please check the documentation provided.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs