This excerpt taken from the GMCR DEF 14A filed Jan 28, 2008.
4. ESTABLISHMENT OF AWARDS
Not later than (i) 90 days after the commencement of the Performance Period (or at such earlier time as is required to qualify the Award as performance-based under Section 162(m)), the Administrator shall select the Participants, if any, who are to receive Awards for such Performance Period and, in the case of each Award, shall establish the following: (i) the Performance Criteria applicable to the Award; (ii) the amount or amounts that will be payable (subject to reduction in accordance with Section 5.2) if the Performance Criteria are satisfied; and (iii) such other terms and conditions as the Administrator deems appropriate with respect to the Award. Once the Administrator has established the terms of an Award in accordance with the foregoing, it shall not thereafter adjust such terms except to reduce payments, if any, under the Award or to implement on a non-discretionary basis any objectively-determinable adjustments established not later than the deadline for establishing the Performance Criteria with respect to the Award.