Help on Portfolio

When I’m editing a page, I want to add a grid of images (not a carousel), and the only way I’ve found—using a template that looks great—is through Portfolio Projects.

However, when I add the Portfolio widget to my page, it only gives me two options:

  1. Style, which is fine.

  2. Category, which I don’t fully understand.

The problem is: I can’t choose or edit the images inside the widget! I expected to be able to manually select the images, but instead, it seems to pull content automatically from somewhere.

How does this work? Where do I control the images that appear?

For reference i want something like POFO – Creative, Portfolio & Blog WordPress Theme – Home classic digital agency under: “New stunning projects for our amazing clients”