Hi,
at least in V18 (Center of Mass):
select the view
RMB --> Properties
-- Card --> Display
there Button 'Parts List Options'
Click 'List Coordinate Systems'
- Select --> Center of Mass
on the right --> activate Show (leave Reference Options unchecked)
Quit with OK
Back in Draft click 'Upadte Views'
But you will hardly see it -- it's a just tiny little dot, which however
can be used in dimensioning ... I don't know who designned that feature :-(
dY