Mixing Affected & Unaffected Send/Return Effects Separately

complex,
look into 'buss FX'

try setting up sub-busses, and routing your sends to a bus setup for, delay, or one setup for reverb....

you can set them up for mono, or stereo..

for example, sometimes i like a short reverb with predelay, for putting on rhythm guitars..
and i'll send some reverb out to the 'short slap reverb' buss, and then pan the dry track hard left, and pan the reverb effect by itself, hard right

it's endless how you can setup routing

When you want to add a send,

Right click on the Send for the track you are messing with,

It should create a seperate Bus for you

On the Bus, Insert your (lets say) Reverb and adjust as needed,  

REMOVE all the DRY signals so its just WET

If there are other tracks that will use the same settings on that effect, you can right click on the send section for that track and you will see the option to send it to your new FX Bus.

On each track in the send portion you have adjustments for the amount of volume for that track being sent to the FX bus

I like to solo the FX bus once I have multiple track sent to it to adjust each tracks send volume as needed so one doesnt over power others.

Once thats done, un-solo and you can adjust the amount of the Effect from the FX bus without effecting the volume of the tracks.

This is kinda the way I use it

You will just have to experiment and find what works for your methods.

LOL  Im slow, you got some of the best advise from Bat and Herb

Guess I shouldnt reply and take so long on the posting  

Let us know how it works out for ya