Um, I'm not sure myself, but I think it's a metaphoric ticket
i.e. Like in the lottery you pay for numbers/rows, here your paying for a certain amount of numbers
So in steps:
1: choose which "ticket"/amount of numbers you want
2: pay the price it costs
3: comment done on the group page saying what amount of numbers/ticket you bought
4: Then
LoveAndGivePoints will give you your numbers
5: then when the "lotto time" is done, all the points made from people buying tickets is put into a large total and split between winners, 1st, 2nd, and 3rd