How to close a form

Hallo everybody, I'm very new in Navision.

I created 2 forms (a list and a card)

In each form I have a menu button and I can switch from the list to the chart and viceversa.

Now my question is: is it possible to close the actual form when I want to pass to the other?

At the moment when I switch from the card to the list the card form remains opened, I want to close it.

Thank you very much

Max