Our Towns; A 4-30 Manager Learns to Play Utility Infielder
LEAD: When you're general manager in the bottom rungs of minor league baseball, you really have to manage everything in general. ''Geneva Cubs,'' said Ken Shepard, who answers the phones, too. ''Game starts 7:30.'' ''Geneva Cubs,'' said Mr. Shepard. ''No, we don't sell gloves here.'' ''Geneva Cubs,'' said Mr.