Do you want to move the GNOME Shell default hidden bottom-left system tray to the top-right on the top panel? If so, then TopIcons Plus extension by phocean is for you. This will make any of your tray application shows its icon always on the top panel.
Follow our tutorial about installing GNOME Shell extension. Once installed, you will find a new entry in your GNOME Tweal Tool program and you will find any running tray application (such as Telegram, Hexchat, Shutter, or anything else) sits on the top panel.