I can’t believe that we don’t have:
Pre ou Post fader per channell
Copy Mix from Master to IEM
Mute per MIX
Example, I want to have an IEM MIX in post as I need to controle the master and have both equal. But I have a click track.. I Can’t have it only in IEM mix without going to FOH.
The sound quality is great, but the features for a professional musician, working in a trio where SQ Doesn’t make sense.. the CQ looks like a toy 
Coming from a ui24r, this is so frustration…
I have the CQ-18T, so not 100% sure this applies to the 20B, but on pages 38-40 in the user guide it explains how to send signal to the various outputs.
I use in-ears with backing tracks and a click all the time and it works great.
Thank you so much, for helping out.
I figured out how to send as shown on the manual, but, do you have your IEM mix in PRE or POST?
Usually I use them in Post as we make our own sound and FOH sound with our PA. So, it is importante to be consistent between the IEM mix and master mix. I only want to block / send / mute or something the CLICK Chanell so we only listen on our IEM.
Let me preface by saying I’m just a musician and don’t really understand how any of this is supposed to work. I just fumble around and push buttons until I find something that does what I need. 
I’m using Out1 for my in-ears.
On the Config page, ‘Input Send Levels’ is set to ‘Pre Fader’.
On the Fader → Outputs page, ‘Out1’ is muted on ‘Sends to → MainLR’.
‘Out1’ is set to 0dB on ‘Sends To → Out1’. That way the click only ever gets to Out1.
Hope that makes sense and/or helps. Perhaps someone more knowledgable than me can chime in and confirm this setup, or correct any errors I have made….
Thank you. It does, and it is how it is supposed to work. But, As a musician that control and makes is own sound for FOH, it’s very importante to have post fader. More professional mixes allow this with ease.
Thank you so much!
So.. am I correct that you are using your IEM as reference monitor for the FOH mix ?
Two main problems. The fact that it records to an SD card is fabulous.
BuUT, there is no PRE-EQ tap for the monitor mixes, therefore, whenever I change the EQ on the channel, it changes the sound of all the monitors as well as the house. That might be good in some cases but also is more typically disruptive to the the musician who wants their monitor setting to be left constant unless they choose to adjust it. If I, the FOH guy, decides to boost treble on an instrument, all the musicians have to put up with it in their monitors. NOT GOOD!
Also, the LR MAIN master channel volume and its processing can’t be excluded from a scene save. So, any scene recalled will impose a previous Mains Master EQ and dynamics setting that doesn’t fit the current venue. This renders the scene recall superfluous since, while it recalls the balance and setting of the band mix, it overrides the current master shaping of the currant venue. You might have turned the master up or down or changed the 31 Band EQ, but when you recall a previous scene which has all the balances and effects for a particular a song, that is all gone.
Additionally, there is no way to sequence/edit the scenes to follow a band playlist.
Even though your post is quite off-topic for the original poster - who actually wants the opposite, namely for the main and monitor mixes to sound sound as similar as possible - just this much:
But if your monitor signals were tapped before the EQ, your musicians would only ever get the flat signals in their monitors - without any chance to adjust the sound.
I’m afraid that would be worse than making a compromise.
Generally speaking, there actually shouldn’t be any significant differences in sound between the PA and the monitors (see also my reply to you on your topic in December).
But if, in certain cases, this is truly different for you, you could perhaps consider to splitting the corresponding source before the mixer into two inputs, giving you two separate channels for the main and monitor mixes.
If it’s a matter of FOH preferring a generally different EQ curve than people monitoring want – then you should agree to use the per-output EQ curve instead. The monitor output could tame the highs for the full mix, or the mains could boost them. If what it really comes down to is needing a different EQ curve for each input in each mix then the CQ series is definitely underpowered for the job, which isn’t surprising given the price point. Having a pre-EQ signal available to send to an output might be useful in some circumstances but it’s not guaranteed to please everyone, either.