In doubles pickleball, the rules are similar to those of singles play, with a few key differences. Here are some of the most important rules for doubles play:
The court size is larger: In doubles play, the court is 20 feet by 44 feet, as opposed to 20 feet by 34 feet in singles play.
Service rotation: In doubles play, the serving team rotates every two points. The player who served the first point will not serve the next point.
No volleys in the kitchen: The "kitchen rule" still applies in doubles play, meaning that players are not allowed to hit volleys within the 7-foot area on either side of the net.
Double bounces: In doubles play, the ball must bounce on both side of the court before it can be returned. If a player hits the ball before it bounces on their side of the court, it is considered a fault.
Partner positioning: During play, partners should be positioned diagonally across from each other, with one player near the net and the other player near the back of the court.
Switching positions: Partners may switch positions at the beginning of a new game or when the receiving team wins the point.
Serving: The serve must be underhand, and the server must keep both feet behind the back line when serving. The ball must land in the diagonal opposite court from where the server is standing.
Scoring: The scoring system and point system is similar to that of singles play.
Overall, the rules for doubles pickleball are similar to those of singles play, with a few key differences such as the court size, service rotation, and partner positioning
You will get more rules at the official site. Their link could be found here>>>> Official Pickleball Rules <<<<