Disable doubleclick create

I’m creating a tool where people can make reservations only on some allowed dates(marked in green). I want to limit the creation of reservations to one only. In my config I’ve set dblclick_create = false, but when I double click in a green zone (marked timezone) I can create more reservations. Is there a way to dissable that?

I’ve created a html file with my code: reserveer-new.zip (10.8 KB)