When you import portraits using Portrait Auto Flow the default number for portraits per page is 30. You will be able to change how many portraits you want per page during the import process. At a later time you may want to change the page layout for all or some of the portrait pages.
1. Go to the page where a new layout is needed and select Portraits.
2. Portraits editing options will open. In the Photos Per Page dropdown select the number of portraits you want on a page. If you want all the portraits smaller to use less total pages, the photos per page should be a high number. If you want larger portraits, use a lower number.
3. When you select the photos per page number, you will see how many pages will be needed for the portraits and see how the portraits fit on the page(s).