The "Add Accounts" option in the new Outlook for Windows may not be located where you previously found it. In the new version, functionalities are being updated, and some features may have been relocated or modified. If the "Add Accounts" option is missing, it could be due to changes in the user interface or settings.
To add accounts, you might want to check the account settings directly or look for any new options under the settings or account management sections. If you are unable to find it, consider checking for updates to ensure you have the latest version of Outlook, as features can change with updates.
If the issue persists, you may want to consult the official Microsoft support documentation or forums for more specific guidance related to your version of Outlook.