How to Do Add

1. Open Microsoft Excel, and click on the 'Office' button.
2. Click on 'Excel Options' located at the bottom right corner of the Office menu window.
3. Select 'Add-Ins' from the vertical navigation bar on the left of the 'Excel Options' window.
4. Check the boxes next to the add-in programs you would like to download, and then click 'OK.'
5. Follow the installation prompts to install the add-ins, and then click on 'Add-Ins' located in the toolbar at the top of the Office Excel page to load and use your add-in programs; you can also access them through the data, formula and add-in tabs.