Think all I did for it was position toons at the edge of the plaza so that I had a stack of toons facing towards each sphere and made keys for both kneeling and moving all toons forward. Then just slowly move forward, being safe with the cast times so I kneel in time. Once I got to the spheres, I just waited for a cast to finish and broadcasted a click.

This was ages ago so I'm not sure if changes have been made to it, but back then it took a minimum of 6 characters to complete. Not sure if that is still the case.