Has someone dropped out due to an injury or a cancellation? In Slams you can replace that player without breaking up the team. Slams uses a swap model: the substitute takes over the spot of the player who dropped out, and the team stays a duo. That means you don't have to redo any grouping and the schedule stays intact.
Which formats does this work for?
Substitutes only work in formats with fixed duo teams: league (a competition with groups) and tournament. In individual-player formats such as Americano, Mexicano, King of the Court, Beat the Box and Team Clash you won't see the substitution option, because there is no fixed duo to edit. Read more about the formats in league groups and the tournament.
Does the rating stay accurate?
Yes, this happens automatically. Matches that have been played are linked to the player who was in the team at that moment. So the rating history of the player who dropped out stays in place, and every match from the substitution onwards counts towards the new player. You don't have to correct anything by hand.
