Originally Posted by pandaperth

The rule is that you cannot have more than two stopovers in the continent of origin.
Your choice whether you have two at the start, two at the end, or one at the start and one at the end.

How many such stopovers did you have at the start? If less than two, then you can change HEL from a transit to a stopover.

(For completeness - transit means 24hrs or less between flights, stopover means more than 24hrs between flights; the term layover is not used in the rules.)