I'd be glad to help you add another company, carletonsoccer15.
In QBO, you can add multiple companies under the same login credential. Each company requires a separate paid subscription.
To begin, go to our QuickBooks pricing page and pick your desired subscription. You'll be prompted to confirm the account you want to login in with if you're logged into QuickBooks. Select Yes, that's right if the account shown is the one you intend to use for the new company file.
You'll be asked to create an Intuit account if you haven't signed in. Never fill out anything. Instead, click the Sign in link and then login using user ID and password you already use. Follow the rest of the steps below:
- Select the Create a new company when you're in the Connect your companies page.

- Follow the on-screen instructions to create a new company.
Once done, you can always switch between companies by going to the Settings or Gear icon and then Switch company.
Additionally, I've added this article if you need to make some changes to your account information for future reference: Reset or change your login information for QuickBooks Online, QuickBooks Online Accountant, and Quic....
You can click the Reply button if you have additional questions. Have a great day.