For a preexisting document.

1. If you already have a document with paragraphs and subparagraphs, select the paragraphs and subparagraphs you want to number (or press Ctrl + A to select all text in the document.)
   
   
2. Pick the list style you want or click Define New Multilevel List to create a list style that is specific to your needs.
   
   
   
3. Paragraphs and subparagraphs are numbered based on the format you chose in step 2.