Hi DavidHarvey ,
You can create multiple dashboards and therefore, specific ones for your testers or test teams. When you first setup a dashboard I believe it defaults to Private but you can change that in the Dashboards > Manage Dashboards menu, and make it visible via a variety of criteria, e.g. everyone in the Project. Once you've done that, you just need to share the dashboard link or show the testers how to access. You could also ask them to make their start page in Jira the dashboard so they see that overview when they first login.
Hope that helps.
Andy