Setting up autonumbering for tables

That'll be in the document properties. 

To set up numbering in the FIRST CHAPTER of your book:

1. Click the first document you want numbered.
2. Right click and select Numbering.
3. Type 1 in the Chapter # field.
4. Click on the Page tab and select First Page.
5. Click on the Paragraph tab and select Restart Paragraph Numbering.
6. Click Set.

This makes sure that your first chapter resets everything.

To set up numbering in the rest of the book:

1. Click the second chapter in the book file, then shift select the last chapter.
2. Right click on one of the files and select Numbering.
3. Click the Chapter tab and then select Continue Numbering From Previous Chapter in Book.
4. Click the Page tab and select either First Page (if you want the chapter number to increment but the page number for the chapter to start at 1, so 1-1 through 1-14, 2-1 through 2-5, and so on) or select Continue Numbering from Previous Page in Book (so that the page number just keeps counting up, so you have 1-1 through 1-14, then 2-15 through 2-20, and so on).
5. Click the Paragraph tab and select Continue Numbering from Previous Paragraph in Book.
6. Click Set.

Note that, as @Dave Creamer of IDEAS said, setting the Paragraph tab to Continue Numbering from Previous Paragraph in Book means that EVERY PARAGRAPH that uses autonumbering will continue to increment through the files. If you have numbered paragraphs or headings, you'll find yourself continuing the numbering from the previous file. So if the last paragraph in one file is 2-11, the first paragraph in the next file will be 3-13, not 3-1. 

If this is the only tag that you want to continue numbering, you have two choices:

1. Create a reset tag for each of the other autonumbering tags, as in OLF for Ordered List First (where the numbering for the first item in a list is reset) and OLC for rest of the numbered paragraphs to continue incrementing the numbered items in the list.
2. Manually edit the paragraph start number in the paragraph designer. This is not recommended as it means you will have overrides and overrides are generally considered to be a bad idea.