To
change the region type, you must have at least one of the following privileges:Regions can be item regions, portlet regions, or undefined. You cannot add portlets to an item region, and you cannot add items to a portlet region. If you have Manage privileges on the page, you can add either portlets or items to an undefined region, after which the region becomes a portlet region or an item region, depending on what you added to it. You can change the type of a region only if the region is empty. You cannot change an item region to a portlet region if the region contains items, and vice versa. Likewise, you cannot make a region undefined if the region is not empty.
Other users (for example content contributors) cannot add content to an undefined region. Undefined regions appear with no edit controls in them. For content contributors to be able to add content to a region a user with Manage privileges on the page must first change the region type, or add content of a specific type to the region.
Regions can also contain tabs. Each tab can be divided into its own configuration of regions.
To
change the region type, you must have at least one of the following privileges:
Manage All privileges on the page group to which the page belongs
Manage privileges on the page
Manage global privileges on All Pages
Go to the page with which you want to work.
Switch to Edit mode.
Click 
in the region for which you want to change the type.
In the Type radio group, click:
Items to change the region to an item region.
Portlets to change the region to a portlet region.
Undefined to change the region to an undefined region.
Note: If you do not see the radio buttons, your region already contains items or portlets so you cannot change the type. Delete or move the items or portlets and try again.
Click OK to return to the page.
When you add a region, the type of the region is undefined (i.e., it has the potential to contain either portlets or items), regardless of the type of the region where you clicked the add region icon (the source region). When you change the region to either a portlet or item region, the new region will use the same property settings as the source region. If you change the new region to be the same region type as the source region, the new region will use the same attribute list as the source region. Otherwise, the new region uses the default attribute list for that region type.
In page templates, you cannot change the region type if a page based on the template already includes content in that region.
Moving a portlet to another region
Moving an item
Adding a tab to a page