Most of our classes meet 4x over a 6 day rotation.  Some of our classes meet 5x.   Those classes are assigned to a group of 4 blocks plus an additional block.  On the student schedule, the class only shows up under the group of 4 blocks and the added individual block is not shown.  It is necessary to see which blocks (by day & name ie:  1A, 2H, 3I, etc.)  are empty in order to schedule study halls