You can use the selectionStyle property to make selection columns in a table. When you set selectionStyle to either multipleSelect, each row in the column is prefixed with a checkbox. If you set selectionStyle to singleSelect, each row in the column is prefixed with a radio button. The default for selectionStyle is none.

The formData part for a form with a selection table has connections for items in the selection columns in that form. When you connect from the selection column part name, the value will be an OrderedCollection of strings for the items selected in the column. In a single select column, the OrderedCollection will only have one element.