overkill for a one time conference. It’s probably necessary if
you’re running a factory.
But we have used a simpler project management software package
(it was a free review copy) for clarifying the work flow on several of our large one-time projects. We probably didn’t need heavy duty scheduling power, but its ability to print out PERT charts of critical chores helped to visualize what seemed a wild and improbable task. We wouldn’t have bought one if we had had to pay for it.