This page helped a lot: https://www.lukashartl.at/posts/2024/rolling-my-own-el9/

And also read the docs from https://weldr.io/lorax/livemedia-creator.html

Create the ISO for … USB

livemedia-creator --make-pxe-live --ks ks-iso.cfg --iso-only --nomacboot \
--no-virt --resultdir result-pxe.d --project "MY live CD" --iso-name mylive.iso \
--iso Rocky-10.1-x86_64-minimal.iso  --lorax-templates 70-rocky

Create the ISO for … PXE

livemedia-creator --make-pxe-live --ks ks-pxe.cfg --iso-only --nomacboot \
--no-virt --resultdir result-pxe.d --project "MY live CD" --iso-name mylive.iso \
--iso Rocky-10.1-x86_64-minimal.iso  --lorax-templates 70-rocky