Hi, so i’ve chosen a LUT for 1 & 2, LUT 3 is still blank, when i open the Choose button for LUT 3 the selection at the bottom in the pop-up window is blank 
so how do i remove LUT 2 so that it is blank again like LUT 3 is & how it was before i chose a LUT for 2?
By deleting the effect chain and starting again?