How do i install Ubuntu Template?

I just got the Purism Librem 14 and installed Qubes 4.1 on it. Ive updated all of the templates but i want to install Ubuntu Desktop as a template.

I tried to follow this since it lists ubuntu in the community templates

I also tried to click on the ubuntu hyperlink but it seems really complicated

Can someone give me a step-by-step on how to install an Ubuntu Desktop template?

You need to build the template yourself or use the template built by someone else for example this one:

I just downloaded the official .iso instead of a template.
I used a HVM. Set memory to like 4200mb. I was gonna write a guide but have not had time or energy…
Just skip setting a template… None as kernel. HVM not PVH. Load ubuntu from another cube. It boots.