Recommendation for reschedules

Hello,

The business scenarios is the planner workbench recommends to reschedule a purchase order to more than one time bucket (e.g. the original date is 01-NOV-2011 for 100 pcs, but the system recommends to schedule out 60 pcs to 01-DEC-2011 and 40 pcs to 01-JAN-2012).  The buyer, however, wants to have a more conservative picture which means instead of two time buckets like described earlier, he wants systems to reschedule the total quantity of 100 pcs to 01-DEC-2011 instead.

I'd like to know if (1) this is possible, and (2) can be done by changing the value of some profile options in the system.

Thanks!