To set an employee's expenses to be automatically approved, you will need to navigate to the employee's post and change the approver for expenses to be auto approve.
Once the expense approver has been set to Auto Approve on the post, follow the below steps:
Navigate to employee's profile by using the organisation search.
Use the Payroll drop-down and select Expenses.
Click Edit.
A pop-up window will appear.
Use the Expense Approval drop-down and select No.
Click Save.
The employee can now submit an expense and have this automatically approved.