Watch the Root Guide Tone online guitar lesson by TrueFire from Jazz Guitar Greatest Hits Vol. 3
Root Guide Tone is a video guitar lesson presented by Brad Carlton and is sourced from Chord Studies: Jazz Turnarounds Vol. 3
This is an example of a I-vi-ii-V in the key of F using strictly diatonic chords. The important point here is that you're using root guide tone structures so they're very effective in staying out of the way of other instruments. Your fourth finger will act as a guide finger when moving from Fmaj7 to Dm7, and then act as a pivot when you move to the Gm7 root guide tone. The fourth finger will also act as guide when coming back home to the C7.