Use the Bookmarks panel to rename, delete, and arrange bookmarks.
You can nest a list of bookmarks to show a relationship between topics. Nesting creates a parent/child relationship. You can expand and collapse this hierarchical list as desired. Changing the order or nesting order of bookmarks does not affect the appearance of your actual document.
To expand and collapse the bookmark hierarchy, click the triangle next to the bookmark icon to show or hide any children it contains.
To nest a bookmark under another bookmark, select the bookmark or range of bookmarks you want to nest, and then drag the icon or icons onto the parent bookmark. Release the bookmark.
The bookmark or bookmarks you dragged are nested under the parent bookmark; however, the actual page remains in its original location in the document.
To move a bookmark out of a nested position, select the bookmark or range of bookmarks you want to move. Drag the icon or icons below and to the left of the parent bookmark. A black bar appears indicating where the bookmark will be moved. Release the bookmark.
To change the order of bookmarks, select a bookmark and move it to a new location. A black bar appears indicating where the bookmark will be placed.
To sort bookmarks, choose Sort Bookmarks from the Bookmarks panel menu. Bookmarks appear in the same order as the pages they jump to.