In addition to the admin panel SEO options there is a meta box that displays in your posts, pages, and portfolios as well.
This meta box will let you override the title, description, and keywords for that specific post.
If you want to override the title format that you have set in the SEO tab of your theme options panel then you can set it here.
You can set a custom meta description for your post here. It will override your settings in the SEO tab of the theme option panel.
You can type out some comma separated keywords here to override the setting you have set in the SEO tab of the theme options panel.
Check this if you wish to disable all SEO settings you have set for this post. This includes all settings in the SEO tab of the theme options panel.