I tried to generate some schedule and nothing happens. Using latest grandnode demo site.

Also, I could not find existing demo product: https://demo.grandnode.com/fahrenheit-451-by-ray-bradbury
as mentioned in existing forum : https://grandnode.com/boards/topic/5f85814f143cb474dc065f86/reservation-product

Hello,

You are not able to find this product, because demo is restoring every day to the default state. In the case of reservation product, what do you mean by "generate some schedule and nothing happens."? Do you receive error, or something? How can I simulate it? Maybe you are able to provide steps to reproduce the problem.

+ Add New Product
  Product Type -> Reservation
  Product Template -> Simple Product
  Product Name -> Test Reservation Product
  Short Descrition -> Test Reservation Product
  Full Description -> Test Reservation Product
  Vendor -> Vendor 1
  Available Start Date -> 1/5/2021 12:00 AM
Save and Continue Edit
Reservaton Calendar TAB
  Start Date -> 1/6/2021  From Hour : 09:00
  End Date -> 1/12/2021  To Hour   : 18:00
  Interval -> 0  Hours
  Quantity -> 1
  Additional Parameter
  Week Day -> Mon - Sun ON
  Generate Calendar
  
  ** No schedule is generated **
  ** No Error **

Preview -> does not show any Calendar or Parameters

Well, interval = 0 means that a single reservation doesn't take even a minute. So the store doesn't know how long the single reservation should be. It's important to set an interval for example 1 hour - will result in 12 available reservations on calendar.

I am able to test reservation product now. Thank you.

I got confused with the tool tips information for Interval and Quantity fields.
Interval  (?) = Enter the interval between reservations.  ( I thought this is the gap between reservations and hence tried 0. This is actually the length of time of reservation)
Quantity (?) = Enter the amount of time. How many minutes or hours has one reservation.

Thanks for information, we will look at resources, if the naming is confusing, we will change it :)