OK, thanks Ray. The semantics here is the problem.
For anyone thinking of buying an aeroplane or are new to it all; no one is required to contract a CAMO to manage their light aeroplane whether it is used commercially or privately. If the aircraft/s are used commercially then you are required to nominate your CAMO or other as appropriate. A commercial operator may change their nominated CAMO as often as they wish as with the nominated engineers. Most small operators such as flying clubs and others who rent out their aeroplane/s can manage with the day to day oversight without a CAMO. A chosen engineer will normally advise you of the more obscure tasks such as the magneto and propeller maintenance cycles etc. It is a simple task to book in 50 hr., annual and unscheduled maintenance tasks/inspections as they arise. This hardly amounts to 'management'.