By default, Setmore won't allow you to schedule an appointment outside your normal business hours. However if you want or need to, you can enable off-hours booking, which will allow you to schedule appointments anytime regardless of your business or staff working hours.
Enable off-hours booking
1. In your Setmore calendar, click the gear icon in the top right corner, and select "Enable off-hours booking" from the drop-down menu to activate it.
2. To book an off-hours appointment, click anywhere in the greyed-out space on your calendar. The Appointment menu will appear per usual and you can complete the booking.