How to manage Add-ins
Excel
365
Some function in Excel is available only when the add-in is installed. For example, Solver or the Analysis group is not available in standard ribbons; you need to install the add-in before you can use it. See also Using Solver.
To install the add-in, follow the next steps:
1. On the File tab, click the Options button:
![Options in Excel for Microsoft 365 Options in Excel 365](/images/tips/excel_button365/365.png)
2. In the Excel Options dialog box, in the Add-Ins tab, in the Manage list, select Excel Add-Ins, and then click the Go... button:
![Add-ins in Excel for Microsoft 365 Add-ins in Excel 365](/images/tips/366_365/1.png)
3. In the Add-Ins dialog box, place a checkmark next to the item named Solver Add-In:
![Solver Add-In in Excel for Microsoft 365 Solver Add-In in Excel 365](/images/tips/366_365/2.png)
4. Click OK.
See also this tip in French: Comment gérer les compléments.