Follow the below path to override the employee workday.
Step1: Navigate to the Leave tab from the admin portal
Step 2: Go to Information >> Attendance Info page
Step 3: Select the Employee
Step 4: Select the Day from the calendar
Step 5: On the right-hand side of the page, go to Shift.
Step 6: Select the Day Type as Regular
Step 7: Select the Shift
Step 8: Save the changes