Hello, Yumi Jung :)

The function you are referring to is available in Line Crop - [Multiple Crop] mode.

1. Launch the Line Trim Tool

2. Click the option box at the top right -> Changes to [Multiple]

3. Select the line, then right-click

4. Click all the points among the division points at the location you want to cut.

5. An (X) shaped point is created at the selected location. After selecting the entire area you want to cut, right-click.

6. Everything is cropped according to the selected position

Please try using it in the order above.

thank you