BLS2014 does not have an option to automatically create a schedule for a league that bowls every other week.
However, a schedule can easily be created manually by going to the Main Menu and click Setup > Lane Assignments.
In the Lane Assignments & Rotation screen:
1. Click on the date the league is not bowling,
2. Click the Remove This Date button.
Repeat steps 1 & 2 for each date the league is not bowling.