In Chess Olympiads, hosts get a second team, rarely a third. Last time in Russia, Russia2 got bronze IIRC. drin, in our case (Zone 3), the Zonal Authority (the CSB) decides which teams sends to the WC. For that, it organizes round-robin tournaments with one team per country, then KO (semifinals and final). Semifinals longer than final, as the WC berth is played there (2 berths available). ACBL, Zonal 1 authority, decides to give 2 berths to the same country, unique in the world.