You can add some of the objects that are connected to a net, pin, or instance to the active cone. These objects include the ones that have a pin driven by the selected net, output pin, or instance.
To add an adjacent object to a cone:
In the NetlistViewer or a Logical Cone window, select a pin, net, or instance connected to objects that you want to add to a cone.
Right-click the selected object, and choose Add To Active Cone>Add Adjacent. A dialog box displays all instances connected to your selection.
Select one or several instances from the list.
Click OK.
The selected instance(s) are added to the active cone. If the added instances can be connected to other objects already present in the active cone, this command also connects those objects.