In Confluence, how to make a template with predefined values such as document owner or current date?

Question

By looking in the default meeting notes template, I see variables such as $currentDateLozenge or $documentOwner. And it creates pages with the current date and my name as expected. But when I copy/paste this template in a custom template, these variables react like any other variable by prompting for values.

What do I miss?

Johnstone

Note that there's apparently a solution based on user macros, but it requires System Administrator permissions (which in my case I don't have). – Coacher