problem with zoom r16

[delay]

Hello
I've just bought a Zoom R16 and have been fiddling around learning how to use it. I have inserted an effect onto one of the inputs and cant figure how to remove it.
Anyone any ideas please?

 

[Turre]

Yup, it's totally unintuitive because it's so unlike anything else in the system. It's in the manual though (pages 48-49): press "insert effect" to get into the menu, and press "enter" to switch it on/off.