How to add a caption to an image in Pages

How does one create a caption for an image in Pages? In Word it is easy, you simply right click on the image and “Insert Caption…”, but I cannot find any way to do it at all in Pages?

You can set a ‘Description’ on an image, however that only affects voiceover, which I do appreciate! But I also want the ability to move the image and it’s caption together.

I am using Pages 5.5.2, I understand that this is easier in Pages ’09, but I don't have that version anymore…