In the first preset, when I select the King (after clearing away pieces between King and Rook) it highlights all squares between King and Rook. If I then click the second of that, it does a 2-step castling. I have little doubt that on clicking the 3rd it would do a 3-step castling. If I click on the Rook (which is also highlighted) it does a 4-step castling.
With respect to
In the first preset, when I select the King (after clearing away pieces between King and Rook) it highlights all squares between King and Rook. If I then click the second of that, it does a 2-step castling. I have little doubt that on clicking the 3rd it would do a 3-step castling. If I click on the Rook (which is also highlighted) it does a 4-step castling.