You can add all of the logic driven by an instance, a net, or an output pin to a cone at the same time.
To add a driven instance to a cone:
In the NetlistViewer or a Logical Cone window, select the output pin, net, or instance for which you want to add the driven logic to the cone.
Right-click the instance, and choose Add To Active Cone> Add All Driven Logic.
All instances driven by the selected object(s) appear in the active cone. For each selected net, it adds all the driven instances to the active cone. For each selected output pin, this command adds the connected net and all the instances connected to it. For each selected instance, this command adds the driven logic for each output pin.
If the added objects can be connected to other objects already present in the active cone, the command also connects those objects.