Lab enrollments define available openings (not lecture enrollment). Students wishing to be considered for an add code must have completed or be ready for Math 19 and first year writing (enrollment categories M-I, M-II, W-I, W-II). Students (incoming freshmen) are generally block-scheduled for this class which for the Fall semester can fill a large number of labs.  The remaining lab openings are first given to students that are Engineering Majors (as August 2018) then to remaining qualified students. Undeclared students intending to change majors do not qualify as an engineering major.