Dear Linda Smith 15601,
Good day!
Thank you for posting to Microsoft Community. We are glad to assist.
In order to better investigate the question, may I know if you want to change the display name of your Microsoft account?
If yes, please refer to How to change your Microsoft account name or address - Microsoft Support
If you have an administrator account, you can also change the user display name in the admin center.
Change a user name and email address - Microsoft 365 admin | Microsoft Learn
If you want to change the name of an Office document or Outlook,please refer to Change your user name and initials - Microsoft Support
Please forgive me if I misunderstood you. In order to protect the security of your personal information, you can send us a screenshot of the location where you want to change the name in a private message, thank you very much.
Here are the steps to open private messages:
To see the private message options> click on your profile picture in the upper right corner > select the "My Profile" option. Click View private messages in the upper right corner of the page after the page jump.
Your patience and cooperation are much appreciated.
wish you all the best~
Best regards,
Winter | Microsoft Community Moderator