Thanks for following the steps, ParagPA.

In your Company A, you can switch from it to Company B. Let me show you how:

1. In the Company A, click the Gear icon in the upper-right corner and select Switch Company.
2. You'll see your email address that represents the Company B.
3. Click on the email address under the company list.
4. From there, you can set up the company.

Once you log in to your QuickBooks Online account, you'll see the two companies and switch between them.

Let me know if you need anything else.