Multiple images in one attachment page

Question

I want multiple images for one post attachment page, but there is no option for that. How can I do that?

Answer 1

An attachment page is dedicated to a single attachment media item (image, video, audio etc.). You can change it's behaviour by editing single-attachment.php. However this is not recommended.

It is possible to create galleries and insert them in posts. Or install a plugin that displays custom posts as galleries of images.