Restrict "create page" to templates and hide "blank page"

Hi all,

I have been searching documentation and forum/internet, but could not find an answer to my question. I would like to restrict the “Create Page” to only use templates, i.e. hide the section “Default” containing “Blank Page” in the “Create Page” dialog.

If that is not possible, can at least one of the templates be used as default?

XWiki 8.4.5 LTS

Many thanks for any hint!