How do you make questions about elements in a subordinate clause?

I am forming the open interrogative from the following declaratives, replacing the italicized phrases with a corresponding interrogative phrase such as who, what etc.

"He thinks they’ll appoint someone."
"You think someone has the most influence with their people."

Does it follow the same way for a normal main clause?
like "They’ll appoint someone" -> "Who will they appoint?"
So the first example sentence will be changed to "Who does he thinks they’ll appoint?" Is it right?