If you don’t want to link each grid item to a single project page, but simply want to open the images directly in a lightbox window, you can follow these steps:

1. Edit the “Gallery Lightbox” page (or create a new page)
2. Add the “QT: Gallery with Filter” widget to a page
3. Click the “Add Item” button and add your images to the image field
4. Optional: add a filter text label if you want to use filters for your gallery
5. Repeat step 3 and 4 if you want to make a filterable gallery
6. Save the page

Below is a screenshot how to edit the gallery widget and where to add your images: