When you press super key in your window manager you will most likely get a searchable and clickable menu / list of applications. When you install a new application you will get the corresponding menu item. Sometimes you want to make your own entries.
Add a new file ~/.local/share/applications/myapp.desktop and make it look something like this:
[Desktop Entry] Encoding=UTF-8 Type=Application Categories=Application; Name=My New Application Icon=~/Pictures/MyApp.png Exec=/opt/myall/bin/myapp Terminal=false GenericName=My Special New App
Just run command
update-desktop-database
And your new menu item should be there.