Channel Images - can't find other sizes

Question

So I just purchased my first copy of Channel Images and installed it without issue. I then proceeded to add a field and then add images to an an entry. All went smoothly. However I can't seem to find out how to create different sized images. In the entry page there's a tab for SIZES but nothing happens when I click on it.

I used the following template code from the docs

{exp:channel_images:images}
  <a href="{image:url}"><img src="{image:url:medium}" /></a>
{/exp:channel_images:images}

Which spits out the following image url <img src="{image:url:medium}"> Likely since I haven't created a medium image, but I don't see where to do this and there's no information in the documentation.

So my question is - how do I create different sized images using channel images and is there anything else that I am missing that is not in the docs.

Answer 1

Creating a new size is pretty easy actually. It's done in the fieldtype settings.

This image should say it all.

Answer 2

You set up image sizes on the custom field edit form for your specific field.