Batch select images in multi-image field

Hey everyone, this is probably a dumb question, but I found myself in a situation recently where I had to replace all the images in a multi-image CMS field, but I couldn’t figure out how to do that without selecting each image individually and deleting them before uploading the new batch.

A client requested that the image field display a totally new set of 25 images, and I just sat there deleting each one by one and couldn’t figure out how a better way. Anyway, longwinded way of asking- How do I select multiple items in a multi-image field?