What can I set for the whole book?

In "The book" card: Title, Subtitle, "Who is it for? (optional)" with "Write the title, subtitle and welcome" (your AI engine drafts them in the book's language; the pages never go through AI), Author profile, Author, Publisher, Dedication (optional), AI engine, Trim size (6 x 9, 7 x 10, 8.5 x 11, A4), Language of the pages, Font and Title font. The font is also the font of the numbers and the key. Another trim size draws every design again, to fit it.