Silent fingering

Sometimes a piano player changes the fingering while playing a single note or a chord. The symbol, a sort of breve sing, is not in the palette, but you can achieve it very easy.
You go to a text field, press F2 and then you go to Musical Symbols and then to Fingering There you attain the breve symbol very easliy.
If you are a piano player, you should add this symbol from above and below in you palette.