How to rotate (animate) the entire Particle Flow?

Question

3ds Max

Modeling the solar system. I made an asteroid belt using Particle Flow by inscribing particles into the volume of a flattened torus. Added movement/rotation of particles, everything looks cool, but I just can't figure out how to make the entire array of particles rotate (i.e. the entire disk of particles rotates in more or less one plane around the center (sun)). I tried to twist the torus in which they are inscribed - the particles do not spin. Tried to turn PF Source - they don't turn either.
What is the correct way to animate this array of particles?