=================== Office 365 - Online =================== This guide explains how to install the **IBM Envizi Emissions API** add-in from an XML manifest file on **Office 365 Online**. .. note:: Office 365 Online provides the most straightforward method for sideloading the add-in. 1. Go to `Excel `_ 2. From the **Home** tab, click Add-ins 3. Click **More Add-ins** .. image:: _images/add-in.png :alt: Add-ins menu in Excel :align: center 4. Click **Upload My Add-in** .. image:: _images/my-add-in.png :alt: Upload My Add-in option :align: center 5. Click **Browse** 6. Find the **manifest.xml** you downloaded 7. Click **Upload** .. image:: _images/upload.png :alt: Uploading the manifest file :align: center 8. Confirm the installation. A new **IBM Envizi Emissions API Add-in** button will appear in the Excel ribbon (typically under the **Home** tab). .. image:: _images/installed.png :alt: Installed add-in in Excel ribbon :align: center Next Steps ---------- After installation, please refer to the :doc:`Calculation Mode Tip ` section for optimizing your Excel configuration. Please follow :doc:`Usage ` documentation for next steps.