Custom Sidebars Pro - Config

i've got custom sidebars pro installed, some custom sidebars setup and some widgets in them. When on a page, i set the template as "sidebar" . In the section below i am unable to select any sidebars as it says ;

"Here you can replace the default sidebars. Simply select what sidebar you want to show for this post! All sidebars have been locked, you cannot replace them. Go to the widgets page to unlock a sidebar
I cant see any unlock feature in the widgets page. Any clues?

Also, can the sidebar be configured to display on a page itself and not in the sidebar i.e "widget on page"?