How do I record holiday hrs and also the backpay hrs for an employee?

Hi there, @sark9handlr. I'm here to help you record holiday and backpay hours for your employee.

In QuickBooks Online, we can to the Employees tab to record and edit regular salary or hourly rate and additional pay item.  You can also add multiple hourly rate/wage, bonus, commission, overtime, and fringe benefits items to pay them.

Here's how:
 

1. Hover your cursor to the Payroll menu, then select Employees.
2. Choose your employee.
3. From Pay types, select Start or Edit.
4. Select the pay types your want to add or edit. You can select Hourly 2 or Another hourly pay type and rename it to holiday and back pay hours. You can also select the Additional pay types dropdown for other pay types like tips, reimbursement, allowances, or fringe benefits.
5. Enter the amount for each pay type.

1. Then click Save.
   
   

You can refer to this article for more details: Add or change pay types.

I've also added this article in case you'll want to set up and track the time your employees take: Set up and track time off in payroll.

I'll be around if you have clarification or any additional information. Take care!