This is Season 4 episode 2 "Don't Like Fencing? Try Fencing!" Ruff sends Talia and Bethany to learn about sword-fighting, and Liza and Isaac to learn about pole-vaulting.
This is Season 4 episode 3 "The RuffMeal Needs lebih Roughage". Ruff sends Talia, Isaac, and Sterling to make a healthy RuffMeal, and Bethany to Keith Lockhart to learn how to conduct an orchestra.