In reading this response I'm seeing that only one half of the question has been answered. The jobs can be added but can cost centres and jobs be added on a transaction at the same time?
The link provided mentions nothing of setting up MYOB forms for entry of cost centres and jobs together.
I would take this one step further and add what about locations?
this would give me three segments in which to track and review costs, Cost centre (Dept), Job (Project) and Location (Physical site)
How does MYOB Account Right handle this?