Analytical Engine Tuning & Forecast Archiving

Hi,

We are planing on doing Analytical Engine tuning.

We would like to save the forecast each time we run the engine so as to compare them.

Do I need to create few new series in the sales_data table to hold the forecast, each time we run the engine?

If we do, how do we tell the engine to which series it has to write the forecast to?

Any suggestions are greatly appreciated. Thanks!