"At its sole discretion..."

It doesn't get any clearer than that. Union "shall" be able to share, review, consult and recommend, but the company "shall determine."

20-P-5 At its sole discretion, the Company shall determine the specific staffing parameters and metrics that govern trip-trading. The Company agrees to share the general methodology and variables with the SSC, and shall allow the SSC to review specific staffing parameters and metrics at least monthly. The SSC shall be given the opportunity to consult with and make recommendations to the Company on trade criteria, system performance, system upgrades, and error resolution.