There are several ways of deleting notes: Delete action, Clear action, and toggling a pitch in the Pitches pane.

- To remove the selected notes and their positions, press the Delete
key. The selection will switch to the preceding position. - Press Command‑Z
 to undo the last action and bring the notes back. - To select the notes in the penultimate position, click within the rectangle area surrounding the noteheads and stem of these notes. The selection box will highlight this area.
- Press Shift‑Delete
 to clear all the notes in the selected position preserving the space for entering new notes. - For now, press Command‑Z
 . As we need to remove only one note and add another, we will make use of the Pitches pane. - In the Pitches pane, click on the highlighted B3 pitch button to delete only this note.
- Add note F4 via the Pitches pane.
- Press Command‑Right Arrow
 to select the last position in the score.