Scroll View in a Vertical Layout got oversized

Unity Engine
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1

Hello,
I am trying to create a menu, but I got some trouble with my Scroll view. The right panel is composed of a panel with a vertical layout group, inside a Text, the scroll view and a button (inside a panel with a horizontal layout), like this:

* Vertical Layout Panel
├── Text // List of robots
├── Scroll View
└── Horizontal Layout Panel
    └──Button // Connection to robot

I have two problems, concerning height and width.
First regarding the width, even if for the Vertical Layout I check Control Child Size for the width, the Scroll View got oversize (see the picture below), contrary to the text and button. Why?

image
image1278×516 62.1 KB

The second problem is regarding the heigh. If I select Control Child Size for the height, the three components are equally expanded, but I want the title and the button to have a specific size (a max height), and the Scroll View to take all the left-over space. If I uncheck Control Child Size, I need to specify a hardcoded height value, but I want something dynamic. How to do that?

Thanks in advance.