Clone and Delete
The Clone option creates a new system design or library sub-system identical to the selected system design or library sub-system.
Select the Clone option from the red triangle menu for the design or library item to be copied.
The Delete option removes the selected system design or a library sub-system from the panel.
Select the Delete option from the red triangle menu for the design or library item to be deleted.

Help created on 7/12/2018