Multiple percussion instruments on one line

I'm writing a score for percussion. Aside from the usual individual staves for timpani, marimba, etc., I was wondering about general percussion lines that have more than one percussion instrument for one line. Most scores have something labeled like "Percussion 1" for a staff and then have specifications along the staff for "triangle" and "move to bass drum" and instructions like that. However, there's no option on MuseScore for general percussion, so how do I do that?