The Edit Children command, accessed on the right-click context menu, enables you to specify the collection of entities included as children for the entity that the diagram was opened on. The command opens a target window on the packages relation from which you can add or remove entities as desired.
NOTE: |
If you simply wish to add an entity, often this can be accomplished most quickly using a drag-drop action from the diagram Toolbox, specifically by dragging the entity to be added from the All Entities tab. |