The add-in loads automatically when you install Eikon You don't need to install anything else Open a Microsoft Excel sheet and you see in the ribbon If the tab is missing from the ribbon, follow these instructions Or watch this video in a browser II. If there isn't a tab when you first open Excel, go to File> Options>Add-ins and select Manage COM Add-Inns from the drop-down box (select Eikon and Datastream) and then click on OK and restart Excel.