Xodo: How to Bookmark a Page
1. Tap the Bookmark icon from the bottom-right corner of the main screen. If you don't see the Bookmark icon, tap the center of your screen to bring it up.
2. Select the Bookmarks tab, and tap the Add button to add a page bookmark to the current page.
3. If you want to modify an existing bookmark, tap the options button to bring up the edit menu.