How does a tournament get started?

I signed up for a 15/10 Rapid Swiss. The information indicates Round 1 of 5. And an 0/1 by name and all the other players. How does it get started? I clicked Challenge, but that seemed to be a regular game not one within the tournament. Thanks for any help.
If a round has already started, which is what the Round X of Y indicates, then you either joined after the event started or the tourney could not see your client connected during pairing (temp disconnection or playing a game). That's also why you were 0/1.
I signed up for a 15/10 Rapid Swiss. The information indicates Round 1 of 5. And an 0/1 by name and all the other players. How does it get started? I clicked Challenge, but that seemed to be a regular game not one within the tournament. Thanks for any help.