These pivot points are used to create an expected range based on open and closing candle data. It's a mixture of two different types of pivots and together they form an expected range for various time frames. You can set them up from as little as 4 hours to 1 month. My personal favorites are 4 hour, 1 day, 1 week, and 1 month.
The dashed lines create the pivot area for the time frame chosen, and the thick lines create the expected high and low for the chosen time frame.