The minimum booking length cannot be used if it isn't exactly reachable from the default length
When setting booking lengths to the following:
- minBookableMinutes: 5
- defaultBookingMinutes: 30
- bookingIntervalMinutes: 15
- maxBookableMinutes : 65
The minimum booking time cannot be reached - the HTML page will not let you decrease below 15 minutes. You can have 45, 30 or 15 minutes, but you cannot go lower than 15 despite 5 being defined as the minimum.
The maximum time is always reachable - in this example the progression goes 30 -> 45 -> 60 -> 65.