If a donor pursuant to § 23.1-2214 reserves in writing as set forth in § 23.1-2215 to himself or to any other person the power to (i) nominate to any professorship, scholarship, or other place or appointment in the University or (ii) do any other act connected with such nomination and he or such other person fails to make such nomination in writing or do such other act within six months, the board may proceed to make such appointment or do such act.