In the Piano Analytics, level 2 sites will no longer constitute perimeters in their own right (except in the case of existing configurations), but a property at the same level as the chapters, they can be fed directly into the tag without having to pre-define them in an interface. This is in line with a strategy aimed at limiting configuration work to a minimum.
In Piano Analytics, level 2s are simply categorised as a property to be selected from the dataset. This allows you to filter on the desired level 2.