I am trying to have multiple pictures display in pop-ups in an ArcGIS Online web map. These need to be unique pictures for each pop-up and the number is different from feature to feature. There was a mention here: Add Flickr photos to ArcGIS Online web maps | ArcGIS Blog of using a CSV file to upload multiple pictures, but no explanation and I have not found an answer searching online. I would like all of the photos to display in the pop-up rather than being attachments or links.
I found a suggestion to create a unique image for each pop-up here: Configure pop-up for individual features? But I'm not sure how to create multiple. My thought was to create multiple fields for image name and add multiple pictures to the pop-up configuration.
Is there a way to do this using CSV files? Is there another way to do this?