Occasionally you may want to upload photos for a campaign on mass. You can read more about reviewing campaigns via the Campaign Dashboard here.
Alternatively, head to Measure, Rate & Review and click the Review Campaign button.
Select the relevant campaign and fill in another other detail you wish to add.
And then scroll down and upload all images in one go in the final section.
You will be reminded to review any campaigns that are due once a month by email. You can also click to get into the review form from that email and upload your photos from there.