FreePDF: The function to Add items is not included in FreePDF.
You can add documents to existing portfolios.
| 1. | Open an existing portfolio document in FlexiPDF. |
| 2. | If the Portfolio sidebar is not shown, enable it with the command View | group Window | Sidebars  | Portfolio. |
| 3. | You can then proceed as follows: |
▪Click on the Add items icon 
at the top of the Portfolio sidebar.
| or |
▪Drag and drop one or more files in the Portfolio sidebar. Once added, you can change the order of the documents by moving the thumbnails in the Portfolio sidebar with the mouse.