Create Document Template in Google Docs

I would like help creating a document with specified styles and number lists for the creation of legal documents for my real estate business. I will need at least 6 levels of hierarchy for number lists (and I'd prefer more if that's possible), and would like to have someone create appropriate paragraph styles for each level. I'm attaching a document I've created in Microsoft Word that does this. I would like to do something similar in Google Docs. Note the custom numbering for "Article I" and "2.01, 2.02", etc.. It wouldn't have to be exactly the same as the Word document. But similar. The documents we create typically have "Articles", and sub-paragraphs that are identified by the article number (2.03, etc.)