You can delete entire scorecards and elements using the Model and Scorecard Navigators.
If you delete a scorecard, all linked elements and elements associated with that scorecard are also deleted. If you delete an element, all of the linked elements associated with that element are also deleted. It is also possible to delete an entire branch with the delete function.
To delete a model element, select the desired element and press the Delete key, or right-click the model element you want to delete and select Delete from the pop-up menu.