scissors tool in update

." Inside note input, the scissors tool will cut any sounding notes in the voice indicated on the caret that are sounding at the current caret position." ƒ

I understand how the scissors tool breaks ties when needed but I am having trouble understanding how the tool is used in the above explanation. can anyone explain this in a different way (perhaps with an example). I am just not getting it to do anything. at the input carot I hit the scissor icon and nothing happens.

Move the cursor in between two notes, as in the first picture.

Click the scissor icon to split the quarter note into two 8th-notes, as in the second picture.

thank you very much