Shifting the note spacing of just down stem note heads (leaving up stem notes the same)

You also have the half note rest selected, which is preventing some options from appearing. Try Ctrl/Cmd+clicking on that rest to deselect it.

(Also, it’s helpful to forum members if you put screenshots directly into your post, instead of attaching them in a PDF. If you have an image on your clipboard, you can paste it right into the edit window, or if you have it saved in an image file – not PDF – you can drag the file into the edit window and the image will appear inline.)