Yes so have I ...Good luck I was a little confused at first but realised that it works in 2 different ways...
You can play more numbers in the same charity to increase your chances of winning...or you can play numbers in a different charity to win more money.
If I do 1 2 3 4 5 6 for all 5 charities, then if at least 3 numbers come out in either draw 1 or draw 2, then I win 5x the prize. Or if I play 5 lines in the same charity I increase my chances of winning more, but not get 5x the prize....
If that makes any sense? Im still confused but done it anyway...