How to shrink a notification in notification bar in Android Lollipop?

I was used to shrinking and enlarging notifications for more buttons in former android version - Kitkat. Now with Lollipop I am unsure how to execute this. I want to shrink notificaitons with buttons if I do not want to use them (i used to be able to do it) and I want to be able to enlarge them.

Formerly I did it by holding notification for a sec and then pulling it down to enlarge or up to shrink. Now it does not work. Is there a different way to do it? Or does Android decide when to make it large or small (if yes that is a sad thing)