You can draw Capabilities within other Capabilities. In so doing, you establish a composition relationship between the Capability that encompasses the Capability enclosed in it.
1 Draw two Capabilities on a Capability Dependencies diagram.
2 To make the container Capability larger, drag on the handlebars of the Capability.
3 Move the Capability you want to have contained in the other Capability, inside its enlarged symbol.
4 Save the diagram.
In the StV-2 tab of the Capability definition, lists of Parent Capabilities and Child Capabilities are displayed, which show the containment of the symbols on the diagram.