Maybe I want Word to automate something that it won'do, but I'd be delighted to be wrong.
If I start a large document, with Heading Level 1 chapters, I can format a TOC and auto-format page numbers of the Ch5-P1 form.
To make the Chapters Word Level 3, which properaly converts to SOL chapters, and then have L4 and L5m do I need to write the single narrative, and then convert a chapter at a time?
Word's search and replace function allows you to search a document for a format and replace it with another format For example: to change all Level 1 paragraphs to Level 3 paragraphs.
generating automatic page numbers
If you are working in a single chapter in a single file:
1. go into your footer.
2. type the chapter number, a dash, and then insert a page number.
If you have multiple chapters in a single file, it is a bit more complex, and specifics depend on which word processing system you are using. In Word:
1. Insert a section break before the start of each new chapter.
2. Go to multi-level list and select a list that is linked to Heading levels. You may have to tailor the number format.
3. go into your footer. Insert a page number. Format the page number to include the chapter number and restart each section at page 1.
eta: For the 'Ch5-P1' format, you can type in Ch and P when formatting the page number.