Hi Mackeen,
I'd like to get you in touch with the correct group to discuss the licensing options available to you.
The QuickBooks sales team will be able to provide information on adding more licenses to this version of QuickBooks. Their phone number is located at the top of the following website on the right-hand side of the screen: https://quickbooks.intuit.com/.
If you have any additional questions, please feel free to let me know.