How do i copy and paste bookmarks from my Desktop Bookmarks to my Bookmarks Menu?

Hello, Firefox Syn feature may help you When you set up Firefox Sync on your computer, all of your data and preferences (such as your bookmarks, history, passwords, open tabs and installed add-ons) gets stored securely on the Mozilla servers. You can share all this information across all your devices. please see : [[How do I add a device to Firefox Sync?]] [[How do I set up Firefox Sync?]]