Thank you for getting back, @rhsayles.
I'm here to help share a little more information about adding time tracking users.
I've reached out with our engineering team and verified that there are multiple causes for this issue. If the email address is already showing as being used by the company, that would be a reason why the new user addition would fail. If the name the customer trying to use is already present in QBO as an vendor, contractor or employee that is a reason the addition of a time tracking only user would fail.
On the other hand, I found this related closed investigation (INV-26626) about unable to add time tracking user to QBO, if you wish to get in touch with our support team to investigate this further for you, you may give that investigation number as well.
In addition, to learn more about time tracking activation, setup and adding a Time Tracking only user, you may check this article: How to turn on and set up time tracking.
Our doors are always open here on the Community page, feel free to add a post/comment below if you have any QuickBooks concerns. I'm always here to help you!
