Mrjonsong
I'm assuming these are Notes that you would want visible on the screen, e.g. some points about the song/artist that the singer can talk about as part of crowd interaction?
If so, not specifically.
The method I use is the 'formatted chord line' (https://stagetraxx.com/user-guide/lyrics/#adding-chords), but you could equally just put them in a text (who cares whether they are lyrics or otherwise?) at the top of your lyric sheet and use a different colour (https://stagetraxx.com/user-guide/lyrics/#colors) and maybe a specific Heading (https://stagetraxx.com/user-guide/lyrics/#headings) for any crowd engagement speaking notes.
If they didn't need to be visible in lyric view mode, then you can comment lines (https://stagetraxx.com/user-guide/lyrics/#comments) so that they are not visible in lyric view mode. I use this for notes such as tempo, key, descriptioions of MIDI events I'm triggering, etc.