Custom Dashboard
The Custom Dashboard screen allows you to create a new dashboard with a custom name, add/remove widgets to/from the dashboard, and customize the dashboard layout.
To access the Custom Dashboard screen, click on the Custom Dashboards shortcut located on the Organization Dashboard.
The following screen shows an overview of a sample Custom Dashboard:

Custom Dashboard
In the above screen the Default Dashboard (archived default) is the custom dashboard created. The custom dashboard appears only after creation. See Create a Custom Dashboard to create a new custom dashboard.
Custom Dashboard UI Functions
You can perform the following functions from the custom dashboard:
Add Widget:
The Add Widget option allows to add the Widget for which the metrics should be monitored.

See Adding a Widget to add widget to the dashboard.
Edit:
The Edit option allows to remove, modify or rearrange the Widget.

See Editing a Widget to edit a widget in the dashboard.
Delete:
The delete option allows to delete the created custom dashboard.

See Delete a Custom Dashboard to delete a custom dashboard.