CHANGING NAME OF INSTRUMENT TO THE LEFT OF THE STAFF

Hi,

How do I change the name of the instrument to the left of the staff in MuseScore? For example, I chose a violin and then by going to the mixer and clicking on SOUND I selected strings. The point is that the instrument listed next to the staff is not strings, but is still violin. So, how do I change the violin to strings next to the staff? Thank you. Jerome