1. The duration of the match
All matches in all categories consist of 2 sets, if the score is tied 1:1, teams play third (reduced) set. Third set can be played also after one team won both sets (2:0), but that does not affect the final result (2:0).
In first two sets the first team that scores 25 points and has at least 2-point advantage over the opponent wins that set. If the score is tied 24-24, the play continues until one of the teams has a lead of two points without any top limit (26/24, 27/25….).
Third sets is always played until one team reaches 15 points (with 2-point advantage).
2. Number of players and substitutions
Maximum of 12 players can be entitled to play in a game. 6 starting players and maximum 6 substitute players. A substitution must be announced to official scorer or referee (exception is libero player) and can be made when the play is stopped.
3. Time-out
Each team is entitled to maximum one time-out in each set. The time-out lasts 1 minute.
4. The ball
A standard volleyball ball is used during all matches (Mikasa MVA 200).
5. Net height
| Men | Women | |
| Cat. A | 2,43 m | 2,24 m |
| Cat. B | 2,35 m | 2,20 m |
6. Points and rankings
For each game, points will be assigned as follows:
- 2 points for the team that wins 2:0 or 2:1;
- 1 point for the team that loses 1:2;
- 0 points for the team that loses 2:0.
If two or more teams are tied at the end of the group phase, the rank will be decided according to the following criteria:
- Score in the games played between them;
- Sets difference in the games between them.
- Sets won in the games between them.
- Sets difference of all games.
- Sets won in all games.
- Draw.
7. Other rules
All other rules (not specified here), are written in FIVB Official volleyball rules 2017-2020.