Has checkbox select column
The ' Has checkbox select column ' property adds a column with a checkbox for each row in a grid component. This makes it possible for users to easily select one or more records. This property also adds a checkbox in the grid's title bar that will select/deselect all of the checkboxes.
This feature is meant to be used in conjunction with custom Ajax callbacks. It also comes with a couple sub-properties. Checkbox select type allows you to apply an action to selections made only on one page or across multiple pages. The Checkbox selector bubble help property lets you add bubble help to the select all checkbox in the title bar.
Checkboxes added to rows
Checkbox Bubble Help