Help with FET Bypass switch

[crafter57]

Hi Folks, wonderful forum! first time on here. I would like to add a FET bypass switch w/led to manually bypass the control signal. This is from a korg synth chorus board which I later intend to modify(with some help of course). Included is a snippet of the cct and appreciate any comments, ideas and help on how to do this appropriately. thanks in advance.