How to trigger Rubocop Check in Rubymine 2017.1

I'm excited about the new default Rubocop integration. Doing a little testing I can't get it pissed.  Such as, showing and offense if I remove the last line. Which if I run rubocop with my Rake task or manually I get the standard ```Style/TrailingBlankLines: Final newline missing.```. Or testing extra lines to piss of ```Style/EmptyLines: Extra blank line detected.``` cop.

Do I have to trigger a check or am I missing something?