How do I nest tools on a custom tool panel?

How do I create a duplicate default tool panel, but without useless tools, but keeping the tools nested? I like the nested tools for keeping it clean, but hate searching through useless tools. Creating a new tool panel doesn't let me nest tools & I haven't figured out how to drag the nested groups over to the new panel. I have the latest Adobe Illustrator.

Thanks guys.

Citsym Nogard