Here's how I make PMD INJection pose files that load the morphs and group them all at once. First I make the Pose file that groups the dials:

Quote -
{
version
 {
 number 4
 } actor head:1
 {
 channels
  {
  groups
   {
   groupNode Transform
    {
    collapsed 1
    parmNode taper
    parmNode scale
    parmNode xScale
    parmNode yScale
    parmNode zScale
    parmNode yrot
    parmNode zrot
    parmNode xrot
    }
   groupNode Morph
    {
    groupNode Brows
     {
     collapsed 1
     parmNode RBrowDown
     parmNode LBrowDown
     parmNode RBrowUp
     parmNode LBrowUp
     parmNode Worry Right
     parmNode Worry Left
     }
    groupNode Eyes
     {
     collapsed 1
     parmNode Blink Right
     parmNode Blink Left
     parmNode Eyes Natural
     }
    groupNode Head
     {
     collapsed 1
     parmNode Jaw Slim
     parmNode Chin Slim
     }
    groupNode MatrixWorkz
     {
     groupNode Ears
      {
      collapsed 1
      parmNode Ears Out
      parmNode Ears Up
      parmNode Ears Orc
      parmNode Ear Lobes Low
      parmNode Elf Ears
      }
     groupNode Brow Expressions
      {
             collapsed 1
      parmNode Brow Fierce
      parmNode Brow Furrow
      }
     groupNode Cheeks
      {
      collapsed 1
      parmNode Cheeks Out
      parmNode Chin Weak
      parmNode Dimple Cheek
      }
     groupNode Face Shaping
      {
             collapsed 1
      parmNode Chin Square
      parmNode Cleft Chin
      parmNode Head Chubby
      parmNode Head Slim
      parmNode Jaw Narrow
      parmNode Nose Narrow
      }
     }
    groupNode Mouth
     {
     collapsed 1
     groupNode Lips
      {
             collapsed 1
      parmNode OpenLips
      parmNode Lips 1
      parmNode Lips 2
      parmNode Lips Fuller
      }
     groupNode Phonemes
      {
      collapsed 1
      parmNode Mouth F
      parmNode Tongue L
      parmNode Mouth M
      parmNode Mouth O
      parmNode Tongue T
      }
     parmNode Frown
     parmNode Raise Mouth
     parmNode Smile 1
     parmNode Smile 2
     parmNode Snarl left
     parmNode Snarl right
     }
    groupNode Nose
     {
     collapsed 1
     parmNode Nose Beaked
     parmNode Nose Slim
     parmNode Nose Wide
     }
    }
   }
}

Then I make the Pose that loads the morphs and calls the dial group pose:

Quote -
{
version
{
number 4
}
injectPMDFileMorphs :runtime:!MatrixWorkz:Centaur:MWCentaur.pmd
readScript runtime:!MatrixWorkz:Centaur:HeadDials.pz2 }