Hi there, Dgsmalling.
If you are currently using a QuickBooks Solopreneur subscription, please note that this plan is intended for single-user access only and does not support adding additional users. To enable multi-user functionality, you will need to upgrade to one of the QuickBooks Online (QBO) small business plans, such as Essentials, Plus, or Advanced.
For more details about QuickBooks plans and to ensure you select the one that best suits your business needs, feel free to visit our Plans and Pricing page.
On top of that, you may find this guideline helpful when setting up your account or navigating the initial steps of using our software after upgrading your subscription: Get started with QuickBooks Online.
Don’t hesitate to post here again if you have further questions.