With the CAGED system for (dominant) seventh chords you can play any seventh chord in five different positions on the guitar fretboard. If you haven't already, please have a look at the introduction of the CAGED system.
The CAGED system for (dominant) seventh chords uses the open seventh chord shapes C7, A7, G7, E7 and D7 introduced in the basic seventh chords section.
Here are the five basic seventh chord shapes combined on the fretboard:
The numbers in the circles are the intervals / scale degrees. Please have a look at the introduction to intervals and chords if you haven't done so already.
Playing all the notes of a given chord shape is often impractical or inappropriate. Below are commonly used versions of the seventh chord shapes.
When in doubt: Here is an explanation of how to use movable chord shapes and here is help on how to read chord diagrams.
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