[Plugin: AutoNav Graphical Navigation and Gallery Plugin] AutoNav: Grandchildren

Not currently, because AutoNav only makes a single call to the WordPress function get_pages(). Doing this would require multiple calls in a loop. However, this could be coded as an add-on with AutoNav 1.4.7, which is not yet released… please email me if interested.

You could, however, create a “Custom Field” with a specific value, on just the pages that you wanted to display, and then use:

[autonav display=images postid=CustomFieldName:CustomFieldValue]

But note, that will display all pages wwhere the custom field has that value.