How do I set up and additional company

I can help you with creating another company for your QuickBooks Online (QBO), @patriciaheisler4.

You'll need to sign-up for a new QuickBooks Online account to create another company. One company file is equivalent to one subscription.

To put this company under your existing Intuit ID, log into your current company when creating a new account. Simply click on the Add another company button when creating another account (I'll be adding a screenshot for reference). From there, you'll only be asked for an Email address and Password (you should be using the same email address).

Please utilize this article for more details: Create or add another company file to QuickBooks Online.

Additionally, discover the basics of managing your QuickBooks Online subscription, whether you need to examine your billing history, change the card, or update the card. Refer to this article: Manage billing, payment, and subscription info in QuickBooks Online.

Let me know if you need further assistance in creating a new company by leaving a comment below. I'm always glad to help in any way I can. Have a great rest of the day. 

@patriciaheisler4 

One QBO account is for one company file. Consider using QB Desktop to manage multi company files with a single license.