Kitchens can offer a discounted rate to their clients that will override the hourly rate set as the default on Calendars.
To assign a custom hourly rate to a client, go to Clients > Edit next to the client's name > enter the custom rate in the Custom Hourly Rate box > Save.
The next time the client books on any calendar, the custom hourly rate will override the calendar rate. Be aware that this custom rate applies to all space calendars.