how do I put a hold on multiple copies of a book?
Call up any branch and a librarian can do it for you by reserving specific copies. It looks like there are only two copies of this book currently available, however. I would also suggest caution in lending books that are checked out on your card, because you will be responsible for them--but you know your friends best! :)
We do have book bags to lend, specifically for book clubs. These are bags containing 10 or so copies of the same book, and they check out for 6 weeks--enough so that you can hand them out at one meeting and then collect them at the next meeting (of a monthly book club). Unforturnately we do not have a bookclub bag for The Day We Met (although suggestions for new purchases are always welcome), but this might be a good option for future. Read more about this here.
Best wishes and happy New Year!