I use parallel comp and distortion but have no clue why I would use parallel eq so could a slut please explain the uses

Apart from using two different Eq's on two identical tracks for some stereo separation i don't see any use for this.

I don't even know what parallel eq would mean. If you think about it,
a concept like this would not really make sense.

edit:
Just read this:
This technique is really cool. Let’s say you’ve created a frequency pocket where your vocals can really live clearly. If your mix is dense, simple EQ might not be enough to get the vocal to really stand out without making the vocal sound strange. A common technique here is to create a parallel vocal signal, and EQ it so that primary frequency range is focused on.

It might be a presence thing, 2k-4k. It might be a treble thing. It might be that tricky “body” range around 400-600hz. Whatever it is, you contour your EQ to really exaggerate that zone and then compress the EQ’d signal.

How you compress it would also depend on context. Maybe you want to preserve a “round full” tone — so a softer knee/gentler compression might be the way to go. Ultimately you make a context decision.

But no need to be easy on the effect! Since it’s parallel, you can blend it back in however much you want.

The end result of the EQ -> Compression chain is that the selected frequency area stays more consistent in the vocal, which gives the vocal more presence in that pocket you created.
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Makes a little more sense now. Still nothing, that i seem to need in my toolbelt.

My thoughts too that is why I was asking.I could understand using it for some kind of automation but .

Oh I see thanks for that,yes it makes more sense now.I was sort of on the right road with maybe automation eq

I use parallel eq chains for groups of background vocals here and there...if I'm looking for a bit of that "photograph" by def leppard sound, I might boost some high end and add a subtle chorus or something along those lines...

nowhere near as much as parallel compression I distortion but I've done it before

Using parallel EQ you can basically make your own exciter. In combination with saturation and compression, blending in a heavily EQ'd track with the original can often work better than simply boosting the original track with an EQ.

The parallel technique can essentially be used with any type of processing effect. It's essentially a wet/dry control.

Well, if that's what is called parallel eqing, then my answer above can be deleted.
I do this all the time. Send a bass to a highpassed aux with some exciting and stereo widening etc.

Be careful with the phase shift that EQs create. When mixing with the dry signal it can give unexpected results...

this. but do try it and find out for yourself.

Get the DMG EQuilibrium demo and find out, it can do both serial and parallel equalization.