The Seventh bar chord in the root six position is derived from the basic E Seventh chord and as with other root six bar chords the root note is found on the sixth string. Therefore, positioning this bar chord on the first fret will produce an F Seventh.
Study the following chord diagrams which are all the Seventh bar chords used in Example 43 below.
A basic syncopated rhythm counted as 1, 2 and miss and 4 and, is used for Example 43.