Including a Component via the Block Library

When you stored frequently used components in a block library, you can include them via the Library palette.

In the Tree Pane, go to the Outline tab.
In the Library palette, use the combo box to select the category that contains the desired item.
In the item list, select the item you want to add to the interface.
Drag the item to the Outline tab or to the drawing area.
The item is included in the edited component and, if you dragged it there, in the drawing area.