Is there a way to show the employees Preferred first name, instead of their legal first name, on the Kiosk?

Thank you for posting your concern here in the QuickBooks Community, 

@Highland-Nursery. Let me share some information about your QuickBooks Time kiosk. 

Showing the preferred name instead of the legal name is currently unavailable in QuickBooks time. The legal name displayed will be the same as the one linked to your QuickBooks Online account. 

Let me share these articles that can help you manage your QuickBooks time: 

• Time Clock Kiosk App for Onsite Employees | QuickBooks
• Set up QuickBooks Time Kiosk
• Set up QuickBooks Time in QuickBooks Online or QuickBooks Online Payroll

If you still have any questions, I'll be here to assist. Have a great day!