I have spent the last hour trying to do this with no success. I think I've done it before but I forgot how and  the guides have been no help.

I want to create a question bank with selected questions from 3 existing quizzes. Those quizzes' questions were not previously in a test bank, so I'd like to just go through those 3 quizzes and mark questions to export them to the new question bank. Or, I'd like to create a new question bank and go find questions in these 3 quizzes to import. There's lot of info in the user guides about moving questions between banks. Or about creating banks and then manually writing questions. But I want to create a bank and import existing questions that are in quizzes. I'm using the old quizzes, BTW. 

OR I'd just like to create a new quiz and copy questions from existing quizzes; but I think the only option is to copy them from banks. Which is why I'm trying to create a bank and import questions. But if I can just skip the bank step and create a new quiz and pull from existing quizzes that'd be great.