Hello I am thinking about purchasing the master tier, about the sharing:

question 1: Lets say, I have not bought the whole Eberron book, only the kalashtar and warforged races. Can those be shared even when it is not the whole book?

question 2: If I had the whole book, can I share only part of the content? For example that the changeling is not visible to the players? 

Thank you. 

Question 1: Yes. It shares what you have purchased. 

Question 2: You can restrict some adventures from being read through sharing, but cannot prevent character sheet stuff.

Thank you, kind sir.