Sometimes you might want to freeze the content of a particular region so that users cannot change what appears in that region. For example, your page might be divided into several regions that contain navigational elements, and a main content region. You want users to be able to edit or customize the content in the main content region, but you don't want them to be able to edit or customize the other regions, potentially adversely affecting the appearance of the page, or removing important navigational elements.
In page templates you can freeze the content of regions so that users cannot change the content in these regions when they are editing or customizing a page based on the template.
You can also freeze the content of regions in pages. This means that users cannot change the content in these regions when they are customizing the page. Users with Manage privileges can still change the content of these regions when they edit the page.
In the Navigator, click Edit next to the template with which you want to work.
Click 
in the region for which you want to freeze the content.
Clear the Enable Users To Include Content In This Region check box.
Click OK.
Now, when users edit or customize a page based on this template, they will not be able to add content to the region, or hide, show, delete, or move existing content.
Go to the page with which you want to work.
Switch to Edit mode.
Click
in the region for which you want to freeze the content.
Clear the Enable Users To Include Content In This Region check box.
Note: As users cannot customize the content of item regions, this check box only appears for portlet and tab regions.
Click OK.
Now, when users customize the page, they will not be able to add content to the region, or hide, show, delete, or move existing content.
Note: Users can still add, hide, show, delete, and move content when they edit the page.