Unless it's a breaker switch that you can turn back on, I wouldn't be jacking with the learning how to reconnect that chandelier if you have to have a handydude undo it in the first place.
Funny story time:
My wife had a 'handyman' redo the lighting in her bathroom as she put in a chandelier (who has a chandelier in the shitter - my wife that's who) and some track lighting above her new counter tops. I told her, no one flips the damn switch until I'm there to observe. I flipped the switch and the chandelier came on, the new bathroom vent came on as well as the light that goes with the vent which is supposed to be a separate line. He TOTALLY screwed it up and I was horrified when I crawled into the roof and saw the mess he made trying to figure out how to wire the whole thing - no understanding of line and load he just tried matching wire colors. I spent a whole weekend completely pissed drawing up the wiring schematics and then redoing the wiring myself so I could be assured my house wouldnt' burn down at the hands of some idiot handyman.
He also ended up flooding a spare bathroom when he ran a nail through a copper pipe in our laundry area. Chalk up another weekend to re-soldering pipe because I damn sure wasn't going to turn him loose with a torch to try and learn how to do it himself at the risk of burning the place down.