Problem about autolayout

Hello,

I’m having one big problema about autolayout. I want to make a 2-layered scroll menu but the las element I want it to be one layered but the height of the total menu. In this picture you will understand:

 

As i’m trying to make a horizontal scrolling menu, i have to autolayout it, but it doesn’t keep me this form, it keeps me modulating the elements, and I cannot arrange this. Please I need help to make this menu!