Please remember that I've only done this once and it was a couple of months back :P .

In my case I worked on V4, so in the "Libraries!DAZVictoria 4" folder you'll find 66 folders, 132 .pz2 files & one V4ActorList.txt. The 132 .pz2's are created when you run the updater and are overwritten each time you re-run the updater, the .txt is the key file and holds the bodypart numbering.
One of the folders is for the DAZ morph deltas (yours can go anywhere you want), the others are the main part of the EXP system, each of which holds atleast 3 files for every EXP morph pack you've installed.

I only had to work on the head which meant I had to make 2 files, they are '05-Milla_Chnnls.pz2' & '05-Milla_Grps', the '05-' is the bodypart number, I don't think the 'Milla' has a function other than to remind me what morph it's for, the '_Chnnls' & '_Grps' tell the updater which of those 132 .pz2's the info goes into.

05-Milla_Chnnls.pz2

{
version
 {
 number 6
 }
 {
 // This file consists of all channels for the 'head' actor, for the 'Milla_Jovovich' product.
 }

  targetGeom FHMMilla_Jovovich
   {
   name EMPTY-Milla_Jovovich (Head)
   initValue 0
   hidden 1
   forceLimits 1
   min 0
   max 1
   trackingScale 0.01
   keys
    {
    static  0
    k  0  0
    }
   interpStyleLocked 0
   indexes 0
   numbDeltas 0
   deltas
    {
    }
   blendType 0
   }
}

05-Milla_Grps

{
version
 {
 number 6
 }
 {
 // This file consists of all groups for the channels of the 'head' actor, for the 'Milla_Jovovich' product.
 }

   groupNode Morphs | Shapes
    {
    collapsed 1
    groupNode Custom
     {
     collapsed 1
     groupNode Milla_Jovovich
      {
      collapsed 1
      parmNode FHMMilla_Jovovich
      }
     }
    }
}

All I did was copy two of the head files, renamed them and then altered the contents to what you see above.

The Delta & ChanVis files just need thier targetGeom renamed to match the ones in the '_Chnnls' files.

PS made mine with DeltaX15's INJ/REM script in DS, it was updated several months back to make it work in DS3, it's sssllllooooowwwwwwwwwwwww and half the time you think DS has froze but it will get there eventually (takes about 15 minutes for a head morph).

PPS this crap forum code has eaten all of the formatting in those 2 chunks of code