Is there a way to duplicate a custom defined photo cell and place it (the cell) on a different page than the original (Lightroom Classic Book Module). I get frustrated having to recreate, resize, and make sure it fits the proportions needed. Surely there is a way to "copy" and "paste"..??
But it is possible to 'Copy' a page layout, with your defined Photo/Text Cells-
1) Select one page, [Right-Click] > [Copy Layout], then select another page and [Right-Click] > [Paste Layout]. (Note: I find that I can only [Paste] to another selected page that already has a photo cell on the page- 'Paste' Doesn't work on a 'Blank' page.)
2) Select one page, [Right-Click] > [Save as Custom Page]. Thus you always have the Page layout available any time in the future. (Custom Pages are specific to the Book Size in which it was saved.)