I want to calculate starting work on a contract renewal based on contract end and the supplier's classification.
If the Supplier's Classification is "strategic" I need the Start Renewal to begin 540 days prior to Current Contract End date
If the Supplier's Classification is "key" I need the Start Renewal to begin 360 days prior to Current Contract End date
If the Supplier's Classification is "transaction" I need the Start Renewal to begin 180 days prior to Current Contract End date
If the Supplier's Classification is "Mandated" or "NA" I need the Start Renewal to equal Current Contract End date
Thank you for any suggestions.