Fix array not scrolling

I want to create an application with 2 areas. The upper part of the screen will be fixed and the lower part will scroll full of dynamic labels according to my need. What layouts should I use?
This means that when I roll the bottom part the top part stays in place and does not roll as well

Use two arrangements, upper vertical arrangement and lower vertical scroll arrangement and set height of both layout to 50%

Now the upper layout will be fixed and lower will scroll from half of the screen, it will only scroll if the contents in the lower layout exceeds the layout height.