The folders are as follows:Star Trek- Season 1-- S01E01-- S01E02--...- Season 2-- S02E01-- S02E02--...
S01E01 adds the system to the library but does not add S02E01. For all the serials I have on HDD, OSMC always adds only the first series.
I know the page and read it. But not really. I had one thing wrong in setup.