You can do that like this, using "formula is" option in CF

condition 1
=C2>IF(F2="Perm",14,IF(F2="Prob",7,C2))
format red

condition 2
=C2>IF(F2="Perm",6,IF(F2="Prob",3,C2))
format amber

condition 3
=OR(F2="PERM",F2="Prob")*ISNUMBER(C2)*(C2>=1)
format green