Navigate to the dashboards page click on New Dashboard. You will be presented with a form with a few fields on it. Fill these fields out to create your new dashboard.
Title is the title of your dashboard. This can be anything you wish but make it descriptive so you can tell your dashboards apart from each other. This is a required field.
Visibility determines who at your company can see this dashboard. This is a required field.
Layout is the pre-defined layout that your dashboard will assume. This is a required field.
Once these fields have been filled out click on Save Changes and your dashboard will be created and presented to you, empty, for widgets to be added.