A dashboard is a web page that contains one or more panels. These can named, saved, and reopened, and have unique URLs, which you can share with others and embed in another Web page. Dashboards can also can be protected, making them read-only.
Generally, you will want to have multiple dashboards to show different aspects of your data. You may want to start with a single dashboard and save a copy of it when you are satisfied with it, building up a set of dashboards for their project.
Dashboards are listed on the Dashboards home page.