1. In Excel, click the "Add-ins" button under the Home tab.
Note: The Add-ins tab in the Excel Ribbon no longer opens the Add-in Store.
2. Click "More Add-ins" to open the Add-in Store.
3. In the search bar, search for "Frontline".
If you see an "Office Store not available" message, you will need to contact the admin of your Office account to allow access to the Add-in Store.
4. Click "Add" for both add-ins: Analytic Solver and Data Science.
5. You should then see the Analytic Solver tab and Data Science tab in your Excel ribbon.