1. Click the Add Time Spec button and a pop-up screen will appear.2. Enter 'Office hours' in the Name field.3. Click the + button below the MON.4. Set the start time to 7:00 AM and the end time to 10:00 PM,5. Repeat 3-4 from Tuesday to Friday.6. Add a holiday group to close the office on public holidays or special holidays.7. Click the Save button to create the new time specification.