Creating Components by Dragging from the Palette
Components can be created by dragging them from the component palette to the window. The component will be place where they were dropped at its default size. Once on the window, the component can be resized using its resize handles.
Creating Components Using Shapes
All of the shapes that you can draw using the shape tools are themselves components. As such, they have properties, event handlers, names, layout constraints, and all of the other things that you'll find on other components.
Custom palettes are like expanded copy/paste clipboards. You can put customized components or groups of components into a palette for quick access.
To create a custom palette, right-click on a tab in the tabbed palette or a header in the collapsible palette, and choose New Custom Palette. Your custom palette will appear as the last palette. You can rename it by right clicking on the palette. Your custom palette has one special icon in it, the Capture
Note that these are simple copies, and are not linked back to the custom palette. Re-capturing that palette item will not update all uses of that item across your windows.