I'm currently learning how to conduct Berlioz's Symphonie Fantastique - Reveries and Passions. In the first few bars there are fermatas over a few rests and I know I'm supposed to prolong and hold the rest, but what do with my hand? Am I supposed to treat it as I do with notes that have fermata? Or do something else?
Wrap up the previous note. Do nothing for a suitable amount of time (but don't drop your hands. Keep the orchestra's attention). Give an upbeat into the continuation.