Play in a competitionWhen you have joined a competition, you can select whether your online game counts in that competition, or not. If you have joined more than one competition, you must select your competition before you add or join a table.
To play in a competition, you start a game in the public game room. This will show the available tables window.
Before you add a new table, be sure that the Competition selection box in the Add a table area is showing the name of the correct competition.
Before joining another table, make sure that the competition selection box for that table is showing the name of the competition you want.
For a full explanation of the available tables window, see the online tables window reference.