I wrote this (like most of my obvious tutorial posts) because disturbingly large amount of people keeps asking about it. If it's obvious for you, don't hate me, just move along. Here's a nice page brake so it doesn't take up your feed ^^
Yes, you can edit entire shelves at once!
You want to know more I assume? Good.
Go to your shelf view.
Switch to a table view:
That's where all the cool things happen