Post Preview Layouts
The ultimate detail content page which is displayed after clicking on post title of gallery page.
For example: The page you are reading now is a preview page and it is using personal layout.
All the layouts folder & files are inside wp-content\plugins\wp-upg\layout\media folder.
Each post can have their own layout and that can be updated from Dashboard > Add/Edit UPG Post.
personal layout can be edited from Layout Editor > UPG Post Preview Layout tab.