noob question about sound editing and trimming

So I have been using toonboom studio up until now. I just got toonboom harmony essentials, and I’ve found that you can’t delete cells in the audio layer like you used to be able to, by just using the regular “delete cell” key. Is there a way to delete cells in the audio layer, or just trim audio in general?
Thank you

just click on a cell and click delete, to trim the audio double click the Sound layer to open the Sound Editor panel, click on the Sound track in the Sound Editor, to Trim the Sound layer just click and drag on the ends

NB. At least in 12.2.0 (not sure about newer versions) there’s a bug where if you have drawing cells and audio cells selected at the same time, pressing backspace will only delete the drawing cells, not the audio cells.