When the two Jokers are used, they are the highest-ranking trump cards.
One joker is designated Big Joker, while the other joker card is the Little Joker. When this setting is active, the Jokers replace the 2 of Clubs and 2 of Diamonds.
The ranking of the spades thus become like this:
Spades: Big Joker, Little Joker, A, K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3, 2,
Clubs: A, K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3
Hearts: A, K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3, 2
Diamonds: A, K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3
There’s no gameplay differences according to Classic Spades.