help Setting up Fx on a chennel

Just got the Avantis and tied setting up an Fx on a Channel and I was unable . can someone help me with the steps to Do so?

Put FX sends on a layer. Select “Mix” on the channel that you want to put FX on, and raise the levels on the FX sends as desired.

You can also press “Mix” on a single FX unit, and send whatever channels that you want to that unit by raising their respective faders.

can someone help me with the steps to Do so?

to be honest…
if you are unable to do this basic procedure on the Avantis,
then you should think about your knowledge about mixing in general…
try to find someone who can help you with your basic skills
or at least you should read the getting started guide

Or maybe you should rephrase your question if we got it wrong…?