Dave
I do mean the role not the person, but hen the person woudl be in the role...........
I agree about he number of people required to do the job too, though I am not sure that you can ever, sensibly, be in a position where you have two people as the manager. I really can't se ehow any organisation could run that way. Where do you find shops with two managers on duty at the same time, banks with two branch managers, police shifts with two shift Inspectors etc. It would be anightmare for designating responsible persons. Whether it fits with the (generally) metropolitan 2 pump stations with a prior rider StnO (now WM for pay purposes) and SubO (now WM[A] for pay purposes) and so doesan't upset anyone is entirley irrelevant if we are discussing the real world. If this can be proven now then why have we never had two StnO riders, or 2 SubOs on watches before? Reason - there has to be someone in ultimate charge/management. This line of thinking would ned up with a 'senior' watch manager, rather the same as having only one anyway!
If the job is really too big for one person then introduce more assistants. So more CMs needed? Maybe have a developing WM as the deputy, that way there is a clear distionction and this would provide the correct level of development and mentoring for that D/WM. Alternatively split the group into two and have management structures for both, but again if this is an existing group how did it survive before?
A practical solution? I consider this to be, at present, as close as porcine aviation.