Possible to add notes to a chord by pressing the keys simultaneously?

is it possible to add notes to a chord by pressing the keys simultaneously? If not, any workaround maybe. I'm using MuseScore for drum notation so yeah. I could add the different elements one after another but they delete each other if I do that. I could have them in a voice (channel?) but I only have 4 to work with ant it would still be a hassle. Adding a snare and a kick at the same time would be really amazing.