What is Qualify?

Legal Definition
To make one's self fit or prepared to exercise a right, office or franchise. To take the steps necessary to prepare one's self for an office or appointment, as by taking oath, giving bond, etc. Pub. St. Mass, p. 1294; Archer v. State, 74 Md. 443, 22 Atl. 8, 28 Am. St. Rep. 261; Hale v. Salter, 25 La. Ann. 324; State v. Albert, 55 Kan. 154, -40 Pac. 286. Also to limit; to modify; to restrict. Thus, it is said that one section of a statute qualifies another.
-- Black's Law Dictionary