Grouping fields within section

Hello,

First of all great plugin.

I have a section called “Post Settings” and I want to add two field groups under this section, Field groups:

Post Meta Settings
Share Post Settings
So they looks like the below image

http://i.stack.imgur.com/2oRLK.png

Please advise

http://ww.wp.xz.cn/extend/plugins/option-tree/