Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Gail,
A Microsoft 365 Personal subscription and a Microsoft 365 Business subscription are different account types, so there isn't a direct option to convert or switch a Personal subscription to a Business subscription.
If your goal is to use a custom domain email address with Microsoft 365, you'll first need to purchase a Microsoft 365 Business plan and set up a new business tenant. During the setup process, Microsoft will provide a default domain in the format yourtenant.onmicrosoft.com. After that, you can add and verify your own domain and use it for email addresses.
For the complete setup and migration process, you can follow Microsoft's official guidance here: Switch to a Microsoft 365 for business subscription.
I hope this helps point you in the right direction. Feel free to let me know if you have any questions.