EB16 effects board routing

every sample I use is mono, and I have them individually routed using the 8 output expansion and to a mixer.

Now if I go into the effect board and chose either MULTI FX 1 or 2, and go to the effect mixer setting

in the 'output' you only have stereo options L/R - 1/2 - 3/4 etc

Can you not route the output to one channel like the sound is? It seems the only way to do it is to hard pan the effect to the relevant side

for example:

effect is assigned to a sound that is assigned to channel 2 on the mixer
on the effect mixer setting chose output option 1/2
go to panning on the effect mixer setting and adjust to R50

otherwise it bleeds onto channel 1 on the mixer, and who would want that

its because the fx outputs on at least some of them are stereo.