Time Series Decomposition

I came across the Excellent time series decomposition visualization for Power BI, 

• I did notice that there was a typo in the Model Description quarter (instead of Quarter)

My Questions are

• is there any additional Documentation describing the Correct use of the Add in and the Interpretation of the results. E.G what do the Algorithm Parameters actually do?
• is there any way to Extract the Actual Model ?
• is there a Way to Forecast from the Model ?

And if there s not way to extarct the Model or Focats from the Model - What is the Point? What Am I Missing?