I understand how confusing it is when the “Add account” option isn’t visible and the steps you find online don’t match what you see in Outlook.
The existing Q&A Assist reply and Hornblower409’s response are both pointing in the right direction: the correct steps depend on whether you’re in New Outlook for Windows, classic Outlook, or Outlook on the web.
1, Check which Outlook experience you’re using
Use the version-check steps here to confirm whether you’re in New Outlook for Windows, classic Outlook for Windows, or a web version.
2, If you are using New Outlook for Windows, add the account from View settings
Follow this path to add another email account in New Outlook for Windows: View tab > View settings (or File tab > Account info) > Accounts > Your accounts > under Email accounts select Add Account > Continue and complete the prompts.
Reference: Add an email account to Outlook for Windows - Microsoft Support
3, If the New Outlook steps do not match your screen, use the classic Outlook steps instead
If what you see does not match the New Outlook steps above, use the Classic Outlook tab in the same support page and follow those instructions for adding accounts in classic Outlook.
4, If you are using Outlook.com on the web, switch accounts by signing out and signing in with the other account
To move to a different account in Outlook.com, sign out from the current session, then sign in again using the other account’s credentials. Reference: Sign out of Hotmail or Outlook.com and How to sign in to Outlook.com
Please note that this is a user-to-user forum, so features and account options cannot be changed here, but the steps above should help you reach the correct place to add or access the additional account based on the Outlook version you’re using.
I hope this helps you get the additional account set up successfully.
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