Hello Ophir,

Thanks for reaching out to us!

Unfortunately trail servers do not support setting up a pipeline override which is why you're not seeing what the documentation mentions. If you would like to follow the XAR tutorial, you would have to download and install the server locally.

https://www.labkey.com/products-services/labkey-server/download-community-edition/

If you're interested in other tutorials, our docs team has curated a list of tutorials which you can use to tell which tutorials will work with a trial instance.

https://www.labkey.org/Documentation/wiki-page.view?name=tutorials

Thanks,
Chet