Allows you to set the property pages at design time.
Available Property Pages
Lists the available property pages. You check the pages that you want to appear on the control.
If you delete a property page from the project that was selected to be used with a control, it appears with the word, MISSING, as a prefix. The next time you open this box, the deleted property page does not appear in the list.
Page Order
Sets the order that the pages appear in the Properties window. The page at the top of the list is the first page that appears when you open the Properties window.
Moves the selected Property Page up one level each time you click it.
Moves the selected Property Page down one level each time you click it.