I know all the box patterns for all the modes and I also know that if you connect them in order you will have a pattern covering the whole neck.
So for example by playing G Ionian starting at the 3rd fret low E string and then connecting all of my 7 box patterns down the neck I have the entire Ionian scale in G, its then my understanding that if I was to say start my Dorian box at say G on the low E string then all my corrosponding box patterns would slot into place to form the entire neck in G Dorian and so on.
So for example to make up a vamp that sounds like Ionian I could use the 1,4,5 for chords or maybe just the 4,5.
How do you make the other modes sound like what the should do please? How do you extract what chords to use from the scale?
To highlight a given mode's "flavour" (e.g. to give a solo a mode's sound) you need to first understand how modes build related chords and therefore the entire modal sequence builds a related chord scale.
You can then identify chord sequences from this scale that highlight the individual modes.
This is what many refer to as modal chord progressions - chord progressions built around a particular mode.
Much of this concept is covered in the video and accompanying lesson below...
So basically, once you've assigned a related chord to each mode (first maj/min/dim then their extensions), to really highlight any one of those modes in a chord progression you must centre the progression around that mode's chord. The most obvious way to do this is to make that mode's chord the tonic (I/i) chord.