browser OPERA icon visible at the bottom of  the pc-screen

i have installed NORTON SECURITY SOFTWARE on a pc. when installing webbrowser CHROME its icon is visible on the desk(/pc-screen)  to the left. however when installing browser OPERA its icon is visible at the bottom of  the pc-screen (on download bar?) and NOT on the desk to the left. maybe it is a nonsense  detail but how come? has something been done wrong when installing OPERA? OPERA is apparently NOT supported by NORTON SECURITY SOFTWARE. a clarification!