Select interval consists of four segments
1. Hourly
This is a Premium feature. Only premium users can use this feature.
Less than 1 hour cannot be scheduled in scheduling process.
2. Daily
Less than 1 hour cannot be scheduled in scheduling process.
The interval for Daily look like the following image.
3. Weekly
Less than 1 hour cannot be scheduled in scheduling process.
4. Monthly
Less than 1 hour cannot be scheduled in scheduling process.