One handy feature/improvement in this new version of Hik-Connect is that you can now overlay your VCA rules on your image in the app. It's a global setting that enables the overlay on all sites added to your account:
Me > Settings > Display VCA Rule > On
It shows the line/area in green and the tracked object in green, with both turning red when the conditions are met and the event triggered. It should simplify set up and adjustment of smart events hugely, as you can test the setup while viewing the app screen in real time.