One of the harder things to do in Adobe InDesign, surprisingly for a page layout tool, is to create multilevel or outline format numbered lists.  The right way to accomplish this, according to the folks at Adobe, is to create a Style for every level of the list you’d like to have! Here are Adobe’s instructions on how to do so (This content is taken directly from https://helpx.adobe.com/indesign/using/bullets-numbering.html#create_multi_level_lists):
Michelle Castle began writing professionally in 2005. She has written technology news and tutorials for consumers, brochure and web copy for the Ehlers-Danlos National Foundation, and promotional materials for religious nonprofits including the International Pentecostal Holiness Church. Michelle has a Bachelor of Arts in English from Oklahoma State University.
UPDATE: I was able to fix this by DEselecting “Allow Document Pages to Shuffle” and “Allow Spreads to Shuffle.” Or perhaps I only need to do one of those, but I was trying everything in the book and happen to uncheck those. Once I deselected those, I was able to move the spreads back to the way they needed to be. Of course, I had to do each of them individually, which would be tedious if you had a very large document already created. Definitely something that I will have to remember to do at the beginning of creating a document. (Luckily, this particular one is only six pages.) I’m wondering if there is a quicker way if this issue returned.
A List Style stores the information about how to number each level. That includes the format of the number ( "1" or "a" or "i"), whether the number is preceded by text (eg "Chapter 1" or "Part A"), whether the number includes previous levels' numbers (eg paragraph 1.4.3), and the indents (the distance from margin to number and from number to text).

I’m unable to access Numbering & Section Options from the Master page (it’s greyed out). I had already manually ‘told’ all the files in my Book where to start, using the Numbering & Section Options from the Layout toolbar (I didn’t know it could be done through the Pages menu). They still show up in the Book listing as starting from page 1, though. I had to juggle between the Document Setup on the File toolbar and the …Options from Layout to get the page numbers to come right. As I have a lot of illustrations throughout the Book, I’d like to have the correct page numbers come up so I can easily find and acknowledge them.
Note that the list name remains the same for all of these tags. Table titles have a level 4 designation, and Figure titles have a level 5. The numbering style calls out the level 4 numbers (^4) on the Table titles, and the level 5 numbers (^5) for the Figure titles. It’s important to note that for this style, both of these restart after the level 3s (Subhead 2s).
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Drag the number, which Publisher defaults to “1,” into place on the ticket. To change the sequence, such as to start with “100” instead of “1,” click the “Page Number” button again and choose “Format Page Numbers.” Click the “Start this section with” radio button and type the new number into the field. Click the “OK” button to have Publisher update the ticket number. numbering using indesign
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