Questions on "i wish you were here" beginner

On example 4, where does that fit into the song? I got example 3 down (the part with the hammer on and Em7 and G). Also on Example 4, it doesnt sound the same as when you play it according to whats written and when you download what he plays. Like on the download, he plays 2 0 (4th string) and then 2 0 (5th string) and then strums A7sus4 but on the written music is says 2 0 (4th string) then 2 (5 string) and then strum A7sus4. It is missing the 5th string pluck that David plays in that song.