Toolbars provide access to actions related to the type of information displayed in a list on a portlet or window. Typical actions allow you to create a new item, filter the list, or allow an action to be performed for multiple items that have been selected from a list. Toolbar actions that require one or more items to be selected are disabled until the checkbox next to an item is selected. Some portlets and windows provide a checkbox next to the column heading above the list that can be used to select all items in the list, or select all items displayed on the current page when there are multiple pages in the list.
To perform an action for a single item, use the item's Action menu. You do not need to select the checkbox.