What am I missing?
https://wiki.phpbb.com/Templating_Tutor ... e_Imageset
To Edit your imageset through the ACP
Go to your ACP > Styles > Imagesets >
Click Edit on myStyle
Select an image you want to change from the Select image drop down menu
The image will appear in a box at the top.
Now select an image you want to replace it with from the Image drop down menu at the bottom.
The image will instantly appear to give you a preview
By default, you should select to use dimensions when changing images.
Click Submit to save your changes to the Database
You can change all of the imageset icons through the ACP, for more on editing styles through the ACP, see: Editing Styles through the ACP
To Edit your imageset through the imageset.cfg file
Place all of your images you want to use in the
/styles/myStyle/imageset/