When you need to add pages to the book, you must find the correct insert position. Open the "Edit screen" and find the audio event containing the audio page information, or if the pages are not announced in the audio and there is no audio event for the page number, find the event where the new page starts. Select "Add/edit page"(CTRL+P) in the "Edit" pull down menu, or click the "Add page" button in the tool bar to add a page.
The 'Add page' button in the tool bar
When the "Add new page mark" dialog is open, ensure that "page-normal" is selected. Enter the page number in the "Begin page" column (leave the "End page" field as it is, with "?") and then click the "Add" button. Now, the page information is inserted as a text event, immediately before the selected audio event.
The 'Add new page mark' dialog
The page text event is inserted before the selected audio event