From The Collaborative International Dictionary of English v.0.48 :
Appointive \Ap*point"ive\, a.
Subject to appointment; as, an appointive office. [R.]
[1913 Webster]
From WordNet (r) 3.0 (2006) :
appointive
adj 1: relating to the act of appointing; "appointive powers"
2: subject to appointment [syn: appointive, appointed] [ant:
elected, elective]