Why you should not care about seasonality
Our answer to this question is twofold: yes, Lokad handles seasonality but no, there is no settings to tweak seasonality.
Indeed, seasonality or rather seasonalities - because beside yearly patterns, weekly and daily patterns should be taken into account as well - are natively handled by Lokad.
Thus, there is no need to tell Lokad about it because such types of frequent patterns are always explored and evaluated, and eventually rejected if data do not exhibit the seasonal patterns.
Our goal is to provide best possible forecasts right out of the box, batteries included, and not asking users to partially address forecasting questions for us.