Characters without bones with blendshapes for production

Hi. I have some questions for you.

  1. How we can import our custom character with blendshapes (morph) without bones?
  2. How to record character with animation or we could work with animation in unreal? F.e. mouth opening, eyebrows moving at the same time of course.
  3. How to solve task with custom eyes.
    I have 3 type of similar mesh with different material. I realized that i could make a blueprint script and change it in ui UE4.
    In maya i hide one type and show other. It look like as a equalizer on mediaplayer.