Each Groups matches will be held in two regions (with two hosts) in a round-robin format.
After the end of regular season, teams will be divided to 3 parts by their rankings: Championship playoffs will be held in round-robin format with 6 teams in 10 weeks.
Final ranking of this round will define the champion.
Relegation playoffs will be held in round-robin format with 4 teams in 6 weeks.
Teams ranked 3rd and 4th in this round will relegate to next season's 1st division.