If an image has not yet been uploaded for a specific screen size, the Add link appears in the Actions column of that screen size. Clicking this link enables you to add an image for the relevant screen size.

To add an image for a specific screen size:

1.From the Image: page, at the left side of the relevant row, click Add.

The New Image/s page opens, with the relevant screen size preselected.

2.At the top right corner of the page, click Upload.

The Image: page reappears, with the row of the screen size updated accordingly.