Question about custom UI

 From:  Y,Suzuki (YOYO426)
8332.1 
Hi,Everyone.I'm Yosuke Suzuki.
This is my first time to ask question at this forum.
May I ask you something about custom UI?
This time I want to make my UI better.I want separate palette.
I tried to understand how to change side panel layout.
but I'm just a concept artist so it was so hard to understand for me...

So if you have any idea how to change layout like image ''ui_01.jpg'' to ''ui_02.jpg'' I'm sorry to bother you, but could you tell me a clue or an answer?
Thank you.
Yosuke Suzuki