1. You disable it with the action ScrollTo > Set Disabled when the player falls down the hole.
2. The manual states that you can't directly adjust it. You can however create an invisible object that you ScrollTo, which I guess would act like an invisible camera. For example, if you Pin an invisible object to the player, offset from the player as much as you want the player to be off-centre, then you assign ScrollTo to that object, the invisible object will move with the player but the ScrollTo will be focused on the invisible object. Alternatively, you could also allow the invisible object to move freely if you want it to change throughout the game, if you want the player to become centred again then disable it on the invisible object, enable it on the player etc etc