Relative to the legal observations in the previous post, I want to point out the language in the first "WHEREAS" in the Decree of Designation.
The Archdiocese of Agana has two seminaries: Redemptoris Mater Archdiocesan Missionary Seminary of Guam (RMS) in Yona and the [St.] John Paul II Archdiocesan Seminary of Guam in Malojloj. Both seminaries train men to become diocesan priests. In particular, a ‘diocesan seminary’ trains men to become diocesan priests who will eventually serve his particular diocese. A ‘diocesan missionary seminary’ trains men who will become diocesan priests who will also be willing to be sent to a mission for a time anywhere the diocesan bishop sends him.