Is there any provision to set up an offline season that incorporates 2-round races with the second round started with a reversed grid from the qualifying grid?

Similar to what GP3 does, though their Round 2 grid adjustment is based on round 1 finish position and is more complex, though if that's possible it would be even better.

On a related note, is there any documentation at all for the .rfm session parameters? There are no comments at all in that section in the provided rfm files, they are pretty self explanatory, but don't cover if it's possible to make multiple race sessions.)