Stacked notes mean you play all the notes at once -- a chord. On guitar the best approach would probably be to look at what chord you are supposed to play, as opposed to which specific notes that are in the voicing, as finding a way to play every note on different strings close enough to each other would take even more concentration than (single note) sheet reading already demands from a guitarist.
It seems like you’re asking how to play chords on guitar. The way you do that is by fretting multiple strings at the frets corresponding to the notes of the chord. Then you pluck or strum all the strings that you have fretted. Does that answer your question?