Hi, Bookmarkquestion Thank you for contacting mozilla support. You have two possibilities: * or right click on the bookmark bar in the bookmark menu and select "New Folder" * or- open the "Library" from the Bookmarks menu > Organize the bookmarks and with a convenient graphical management you can create the new folder from the "Organize" menu or with the right button. You can also change the order of folders, insert separators, etc ... In any case, until the folder is created, you can move the bookmarks in by dragging them first in the folder (drag and drop). if the problem persists you can contact us. thank you!