How to open existing dashboards?

You can view the already created dashboard. In order ro open them, click on dashboard tab from the main menu bar. It will open the dashboard window.

You will find the dashboard-tags with a dropdown list containing all the dashboards associated with that tag. Click on the tag-name of which your required dashboard is associated with, you will be rendered with a dropdown list with the dashboards associated with that tag. When you click on the dashboard-name from the drop-down list it will load dashboard to the canvas.