How do I set a default style for numbered list in writer

edit

I make extensive use of lists in my work with Writer. I know how to format and manipulate lists to get what I want. What I don't know is how to make a particular format the default for a full document.

Here's what I want: 1. a. i. etc.

Here's the default: 1. 1. 1. etc.

On a new doc, I go through the process of reconfiguring the list to get what I want. Then, when I want another list and when I add it, I'm back at the default.

I've tried... - making a template. Doesn't make a difference at all with bullets/numbering. - the Format Painter, no difference (Format Painter rarely seems to work under any conditions). - I've read all the previous posts on this, seen comments that I need to use styles, which I am familiar with, but not in context of a list.
- I've also been through the documentation, and though there's plenty on formatting lists, I can find nothing on how to create one document-wide.

What am I missing? Can someone point me to examples of a successful odt/ott that has modified lists so I can deconstruct? Thanks for any help, EdB

Windows 10, up to date LibreOffice 7.0.0.2