Libre office on ubuntu default template

I have ubuntu and have some default templates for writer, calc, and impress. where i need to put them to be they default ?
I need to multiple it to all users as default templates.
the same was in windows, that helped me in this tichet.

Common with your previous (Windows-specific) question, we have some information on the general deployment and post-deployment configuration in the wiki.

You have to define some config options’ values on shared level, or maybe on user level per-user. The proper (supported) way, that woks everywhere (be it Linux, Windows, or macOS), is a configuration extension. It is described a bit there in the wiki, with a PDF, and an example extension.

Then the task would be, how to deploy that extension. A startup script, which would run unopkg, would be needed; either per system (and then it would install the extension in shared mode), or per-user.

so i have my template - Template.ott. i think i will apply it with ansible. but where it need to apply to work as default ?

You read the documentation, use it to find the needed configuration parameter (already done in the previous question), create a configuration extension according to the tutorial from the wiki, and deploy it using the method that you use. All data is there, and I pointed to it. If that’s impossible for you, then you may hire someone, or hope that someone decides to do the whole work for fun at some point here.