How do I dock button to the top and bottom of a widget when using TabSwitcher?

Hi I’m having trouble with laying out a Editor Utility Widget i’m trying to build.

Now I’m using a tabswitcher to go between the tabs however can’r seem to make it scale to the sizeof the widget effectively.

This is my widget makeup:


My goal is to have this:

However it ends up looking something like this:

The height seem to come from the TabSwicther and I can’t figure out how to get it to take it from the size of the widget. Any help appreciated.

You probably want to check all your anchors, so instead of the anchor for these widgets being in the middle try having the add rooms tab to be anchored to top middle and the width length height section to be anchored to the bottom middle.