With the Diamond Casino & Resort Update, Rockstar have added contact missions & free-roam jobs for female character Ms. Agatha Baker.   These missions & jobs become accessible once you purchase a casino penthouse, however, you can join the missions via invite from the host or the free-roam jobs if your CEO/President has purchased a casino penthouse.   To prompt the missions, you must enter the corona by the management doors in the casino. The missions are as follo