Declaring a Double/Multiple Major/Minor

Definition: Dual/Multiple Majors for one baccalaureate degree and two majors for different degrees. A minor consists of a formal group of courses not taken in the same subject as the major, totaling 18 or more units, 12 of which must be upper division, must be completed at CSLA prior to or simultaneously with the degree itself, with a minimum of 2.0 GPA in the minor. (See also AAC BBS subject G.E./Major/Minor, Double Counted Courses).

What should advisers be aware of regarding requirements/declaration?
Can major and minor courses be double counted?