Collection and copy/paste at design-time

Hello, I implemented a grid with columns's properties like specify in FAQ 53.10. Now, i wonder how to allow the user to do a grid copy/paste, so create another grid with there owns components (columns). Actually, the first grid and the duplicated one reference the same components, so the same columns. For example, if i delete a column on the first grid, the column is also deleted in the second grid. Thanks in advance for your answer Woodstock