They’re not in CEP.
They are the custom looping ones.
You can simply put the package in your top hak.
IIRC the package also overrides the standard animations, cancelling any changes Bioware or yourself have made since Vaei did this.
That might not be a problem for you, but I decided to cut and paste the custom lines (only) from Vaei’s model into my own.
Alternatively, since every phenotype has its own independent animation set, you could recode Vaei’s model to a new phenotype X. Then only creatures set to phenotype X will use those animations. The downside is that every new phenotype requires its own set of robe models - there are tools which mechanise that, though there are issues with the long coats.
Despite this drawback, most animators these days go down the new pheno route, not least because you can have an unlimited number of animations that way - and there are so many out there!
The Custom Content Guide explains this in detail if you can’t live with the Vaei package out of the box.