This indicator is made to show you some key levels on the chart on the different timeframes. You can hide them or show them in the settings. The levels are the Monthly Weekly and Daily opens, current monthly, weekly and daily high / low, last weeks high / low & last daily high / low as well as Monday high and low. These levels can be used as key pivots or key liquidity areas. You can also adjust the time to also use the correct Mon range for forex pairs.
As you can see on the chart, that is how the levels show up on the chart.
Update: Made the levels a little longer, more to the left which is better if you are charting. Also changed some names like LWL, LWL, MH, ML. No major changes.