Furniturebank.net has the option to allow referrers to schedule their own appointments at the time of submission, but it is required to be turned on in Settings -> General. It is not the default setting.
First navigate to appointments under the settings on the side menu.
The system lets you set up by the day the number of open appointments.
Date: The day of the appointments
Appointment Start: The time of the first appointment
Appointment End: The end time of the last appointment
Length of Appointment: The length of the appointment in minutes
For example, if you enter 11:00 am as the start appointment, 12:00pm as the end time for the appointment, and enter the length as 30 minutes the system will create appointments for 11:00 am and 11:30 am.