You would need to look into the Flight Manual and Ops Manual....but the normal Bell 212 and 412 Flight Manual state that "Minimum Crew required" is ONE pilot only...
Yes-the Manual would need to get changed and approved by the local CAA....then all company procedures would need to be changed to support Multi-Crew (the PIC would need an ATPL, and both pilots would need a multi-pilot type rating instead of a single-pilot type rating-under EASA rules, both exist...).
So you tell me:
Why would a company jump through all those hoops, only to allow the pilot to log the hours?
Especially as in that case, the helicopter would ALWAYS have to be flown by two qualified crew on board (depending upon how the Ops manual is worded.....it can be worded e.g. that "under Night conditions, the minimum crew is TWO qualified pilots, but under Day VFR it is ONE qualified pilot")..