The concept to map both notes and chord progressions on the fretboard can be simplified using a visual approach.
Here are the two forms to help memorize both diatonic notes and chords progressions starting on the sixth string:
See if you can map out the patterns for the stringsets starting on the 5th and 4th string!
As you can see, if you know the key you are in, simply look for the tonic on the sixth string and all chords in the key can be identified using this approach. A neat visual trick to quickly identify both notes on the fretboard and diatonic chord progressions relative to roman numeral identification.