So is the conclusion that I can operate as a commander in a multi pilot operation on a 145 with only a CPL?
No.
See above in my previous post......
With a CPL, you can only act as PIC in CAT on SINGLE PILOT Helicopter!
Flying "Multi Pilot" on a "Single Pilot Helicopter" does not make it "Multi Pilot"!
Either the Operations Manual, or the RFM MUST indicate that the minimum crew for this helicopter is more than one pilot-or the "second pilot" can not log the hours!!!
But if the Ops Manual or the RFM indicate that the Minimum crew is more than one pilot, both pilots will need ATPL-theory, MCC, and a Multi-Pilot type rating...