You can also use the Order/Group to group controls in your dialog box. This allows the user to cycle the focus through the members of a group using the arrow keys after moving to a group member with the TAB key.
To be grouped together, controls must be contiguous in the Order/Group list box. Hence you should define groups only after you have the tab order set as you want it.
To make and order a group of controlsGroups are shown by lines separating the control names in the list box.
If you have more than one logical group of radio buttons within a dialog, you should group them here so that system will handle their logic properly.