=IF(G14="Zach","Z",IF(G14="Arun","A",(IF(G14="Bard","B",(IF(G14="Kimball","K",(IF(G14="Bill","G",(IF(G14="Adam","AD",(IF(G14="Heath","HD",""))))))))))))


=IF(M1="Invoice",EDATE(N5,10),"")