How do I add an additional account

Hey there, @joan_rivet.

Are you trying to another business account in QuickBooks? If so, we can only have one QBO company per subscription. However, you can have multiple companies under the same Intuit account. 

You can subscribe to another QBO plan for each subsidiary business. I'll show you how to do this using your existing Intuit credentials.

1. Choose a plan: https://quickbooks.intuit.com/pricing/
2. When you reach the Create an Intuit account page, click Sign in.
3. Enter your existing user ID and password. Or, click One more step if the system recognizes that you're signed in.
4. Follow the on-screen instructions to set up another business account.

For additional reference, check out this article: Create or add another company file to QuickBooks Online.

If you're referring to adding an account to your Chart of accounts, you can follow these steps instead:

1. Go to Settings and click Chart of accounts.
2. Select New.
3. Enter an Account name and choose an Account type and Detail type from the drop-downs list.
4. If you choose a Bank, Asset, Credit card, Liabilities, or Equity account, enter Opening Balance, and fill out the starting date in the As of field.
5. Click Save.

If you are subscribed to more than one company, you can switch between them quickly in QuickBooks. Simply click this resource link to know how: Switch between company files in QuickBooks Online.

Please let me know if you need further assistance adding an account in the program. My QuickBooks Community Team and I are always ready help.