Forum:Category options in skin QuartzSmoke

If anonymous users edit an article while using the skin "QuartzSmoke" they can choose from a selection of categories. --ThT 14:47, 13 September 2007 (UTC)
 * 1) Is it possible to include this feature for other skins and logged-in users as well?
 * 2) How can I do this (sysop)?
 * 3) Is it possible to determine the selection of categories. If yes, how can I do this?