You need go Option-Controls. If you not know modify axis in BS, you can read visual guide in my threath, page 7. http://forums.eagle.ru/showpost.php?...2&postcount=67
If you not know what axis correspond in the list, in Add Assignement Panel, you move desired axis all way, and axis is automatically showed.
Thanks you for use my profile.
NOTE: This guide is for other axis, but you only need follow steps for find you desired axis.