You can cue unpitched instruments to pitched instruments - e.g. show a hi-hat cue on a flute staff.
If you’re not seeing a cue, it might be that you’re in the full score – by default, cues aren’t shown in scores but are shown in parts.
Once input, you can change the vertical position of unpitched cues. To show them inside the staff, deactivate the Rhythmic cue property and change their Unpitched note position.