I have my L&R Front of House set up however want to put two stage speakers which have the same mix as L&R FoH including effects (reverb and delay) – I need Mix 1 to be exactly the same as my L&R, is there a way of doing this without having to manual adjust the faders to replicate the L&Rs.
Alt Out with L R selected as the source would do it.
Using a mix would give you independent output EQ to the stage monitors that you may need.
To use a mix set the mix to post fade and post all, select the mix and then set all the send level on all channels and FX returns to unity. Do that the mix output balance will track all the moves you make on the main left right mix.