Will be hard to do. It's not a small program. Maybe login and pass to application will be enough? You can see there calendar and css on inspect mode. Or maybe some other idea for vertical mode?
I made a test and the feature not working for me.
What I should use for angular: nonWorkingTime or nonWorkingTimeFeature? I was trying both but I have no new class in tags after set it to true in features section.
When I check the demo there is shown 40 more new class nonWorkingTime on calendar tags.
On my application I have none of nonWorkingTime class after set it to true.