Thank you for posting here in the Community, dmiller4.
QuickBooks user roles are customizable permissions you can give your team. You can manage their roles and limit their access to specific tasks. You can also choose what users can see and do within different areas of QuickBooks.
However, assigning a user to do payroll only isn't available in QuickBooks Online.
You can check out this article to know more about the different options for user roles and access permissions: User roles and access rights in QuickBooks Online.
For now, you can visit our blog site so you'll be able to get the latest news about QuickBooks and what our Product Care Team is working on.
Please keep in touch if there's anything else I can do to help you succeed with QuickBooks. I've got your back.