Seasonal Shifts by percentage still missing

I agree that this is surely a fundamental aspect of watering schedules. Surely it would be simple enough to programme into the software? Most irrigation controllers have this feature and it is likely that most users of old controllers are used to that feature, so why not include as a optional setting on your controller? In addition it would be nice to see what the seasonal shift is doing to my watering schedule, i.e. watering duration inputted in one column, seasonal shift adjustment in another. Unless it does that already and mine isn’t working?