I don't know about the more than one at a time, as I completed all the multiple parts of June's list for the Greer quest to crew for Jack. I did them one by one and when I got down to the last 4 or so they kept reappearing on her list. Finally gave up after I had the whole durn list to do over. LOL
I just think that the Chapter 3 Quest as they relate to getting a crew together for Jack are bugged or incomplete, but hard to tell as there has been no response to the bug reports I have sent.
