You have a choice out of two types of duels:
Single;
This is a duel that consists of one duel with no siding,
Both players agree on a set amount of points to duel for,
The player that wins the duel, gains the points that were agreed on and the loser loses the amount of points that were agreed on.
Must provide a screenshot as proof.
Match;
This duel consists of a 2/3 match with siding,
Both players agree on a set amount of points to duel for,
The player that wins the duel, gains the points that were agreed on and the loser loses the amount of points that were agreed on.
Must provide a screenshot as proof.
After dueling some one, you can not duel that person for the next 24 hours.