unable to change the Font on Office 365 Zoom Add ins

When scheduling a Zoom meeting in Outlook, the default font is set to Aptos. I would like to change it to Calibri by default. How can I do this? I have tried the below steps

To change the default font for Zoom meetings in Outlook, you can follow these steps:

1. Open Microsoft Outlook.
2. Go to the "File" tab in the top-left corner.
3. Click on "Options" from the menu on the left-hand side.
4. In the Outlook Options window, select "Mail" from the list on the left.
5. Scroll down to the "Compose messages" section.
6. Click on the "Stationery and Fonts" button.
7. In the Signatures and Stationery window, select the "Personal Stationery" tab.
8. Under "New mail messages", click on the "Font" button.
9. In the Font window, choose the desired font (Calibri) and other formatting options.
10. Click "OK" to confirm the changes.
11. Click "OK" again to close the Signatures and Stationery window.
12. Close the Outlook Options window.