Not much to this level. Evade a zapper which is fairly easy. Push the balls, the balls push B - go to the win or get R to push the ball by pushing the lift on R, tap the ball as it enters the hole - B will follow it. The upper ball isn't required in the later scenario.
... compared to your other levels this one is quite concpeted. so clever of you, put a ball on top then falling in awkard direction, to slightly push another ball, so R could push it into the hall, then B will do late tap autopilot during ball is rolling then fall beside fence. but there is a shortcut. Spoiler: Shortcut you should close the access to that spot where B standing. you can add more block or zapper.
The level's gameplay is easy, but it reminds me of the levels that were built by me in 2017. Thanks for sharing...