Hey there, uro-dal-ca.
Thanks for reaching out to the Community for support. The option to assign an "Invoice user only" role isn't available in QuickBooks. I suggest reviewing this article as it will provide detailed information regarding each user role.
I can see how being able to add an invoice user only, is something you'd like to see, so I encourage you to leave feedback for our developers. Comments are viewed and considered as they create new features and updates for the software.
If you have any other questions, feel free to reach back out.
