The goal of that accompaniment lesson is to learn how to stay on one hole of the harmonica and be able to hit a note of the chord you're playing over.
For example, on hole 1, the I Chord is G B D. On your C harmonica, 1 draw is D, 1' is Db, and 1+ is C. So, 1 draw D matches the I Chord. For the IV Chord, 1+ matches. For the V Cord, the 1 draw and 1+ matches. This is what you fill in for your first column. Take a look at that accompaniment lesson with this in mind.
Hello Kevin.
The goal of that accompaniment lesson is to learn how to stay on one hole of the harmonica and be able to hit a note of the chord you're playing over.
For example, on hole 1, the I Chord is G B D. On your C harmonica, 1 draw is D, 1' is Db, and 1+ is C. So, 1 draw D matches the I Chord. For the IV Chord, 1+ matches. For the V Cord, the 1 draw and 1+ matches. This is what you fill in for your first column. Take a look at that accompaniment lesson with this in mind.
Let me know if you need further help.