If I'm trying to Treat or Repair a unit, does the target of my Treat/Repair need to be at Range 1 of the unit with my Helpful Droid, or at Range 1 of the Unit Leader of the unit with the droid?
Treat/Repair? Range 1 of Unit or of Unit Leader?
Range is always measured from anyone in the unit, except for attacks which are measured exclusively from the leader.
Just look about 5 threads below your thread. It was already answered there.