What you can do is select whatever part you want and then look under your picture. There's a list where it (lleftmost) says Figure 1 (or Koshini or something else) if you have the character selected and also says Figure 2 or something if it's the clothes. Then you just select Figure 1 instead of 2 and the same part is now selected on your character. But AFAIK there's no way to disable selection.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.