My solution for multi-page documents on Page Designer is set forth below.
Step 1: Go to page designer settings and create a custom size document (I needed two pages so my custom document size is 927 px wide by 2500 px height.
Step 2: add the static text and fields to your document
Step 3: Print custom document in the desired size format. For example: letter, legal, etc.
Step 4: Look at the print out and arrange the static text and fields on the custom document to fit within the printed pages–making sure to adjust margins appropriately.
Step 5: Reprint and check your work.
This will result in a multi page form.
Tip: Print to PDF to preview your margins and changes for actually printing paper.