Hello, lauren62! It's great to see you make your first post here in the Community! I know how important it is to ensure your employee list in TSheet is updated. I would be happy to help guide you to the right resources to get the assistance you need.
QuickBooks Time is only dependent on the data your third party provides, which is the Gusto application. Considering this, I recommend contacting them directly to update you about their current mapping of data to TSheets.
Right after, log back into TSheet and access the Gusto button in the upper right corner of the page to sync your new employee.
Once you have everything in place, generate a payroll report using QuickBooks Time to ensure the imported data is correct and accurate. This will help you verify that everything is on track.
You can always return here by commenting below if you have clarifications or questions about managing employees and importing data to QuickBooks Time, lauren62. I'll make sure to respond as soon as possible. Wishing you productive and successful business operations!