How to close TMultiview from code in Delphi XE8?

I have a form with a speed button linked to a TMultiView component. On the multiversion, I have several buttons. When you click on any of the buttons, I want the multiview to close and different functions will be called depending on the button pressed. I tried setting the Visible property of my MultiView to false, but the shadow over the form remains. If I click on the quick launch button again then the menu disappears as well as the shadow as expected. Is there a way to solve this?

I am using Deplhi XE 8.1