Have you made your Instance correctly?
If you have, then all the parameters will have boxes around them to indicate that they are instanced.

Right-clicking on the name of any parameter (e.g Styled Text, or Size, etc) will bring up the the Deinstance dialogue.
It’s exactly the action as if you wanted to add a keyframe or Publish a parameter or add an Expression.
Are you saying you don’t see any of those options either?
Simon Ubsdell
hawaiki