The show is part of The Voice franchise and is structured in three phases: blind auditions, battle rounds, and live performance shows.
The Blind Auditions - The first stage is the Blind Auditions, where artists sing in front of the judges/coaches. In this round, each coach selects 14 singers for their team.
Each coach has the length of the auditioner's performance (about 90 seconds) to decide if they want the singer on their team. If one of the coaches is satisfied with the voice of an artist, and wants to mentor them for the next stage, they press the "I WANT YOU" button by their chair. This turns the chair around to face the stage, and allows the coach to see the artist for the first time after they have sung.
If two or more coaches want the same singer, the singer chooses their coach.
The artist's journey on the show comes to an end if no coach selects them.
The Battle rounds Each team of singers is then mentored and developed by their coach in the second stage, called the Battle Round.
The coaches have two of their team members battle each other by singing the same song.
The coach chooses which team member will advance to the next stage.
The judges then have to choose from the individual "battles" which artists to take to the Live Round. The Live Shows
The third stage, Live Shows, is where the remaining seven members of each team perform solo and try to entertain the audience and to impress the judges.
After Round 1, each of the coaches can save three contestants to progress.
After Rounds 2 and 3, each coach can save two contestants to progress.
After Round 4, each coach can save one contestant to progress to the semi-final round.
The remaining contestants progress, or not, based on a public vote conducted after each round.
Semi Final In the Semi Finals, the final two contestants from each team face off against each other.
The judges then split 100 points between the two performers of their team.
The winner is decided by the combination of public votes received and points given by their respective judges.
Final In the Finals, the winner is chosen from the final four contestants, one from each team, based on the results of the live public voting.
Source - Wiki