Staff Label Numbering in Percussion

I have 2 Percussion Players with non-tuned Percussion. E.g. Perc 1 with Cymbals and BD, Perc. 2 with Cymbals and Snare. How can I avoid the staff label numbering? When I make percussion sets for the 2 players, the instruments appear as „Cymbals 1“ and „Cymbals 2“… So in e.g. grid mode I have „Snare“ and „Cymbals 2“… Thanks Jürgen Grimm

In setup mode, select the players in each percussion set and add a group (the icon is at the bottom left). That will break the numbering.