1.Open the Liberty Photo App on your iDevice and then Sign In.
If you are not familiar with this procedure please visit the following page:
Opening The Liberty Photo App
2.Search for the item by using either Account-Item Number or by scanning a tag using the Scan Tag button.
Then open the item.
You can use the following articles for more information if needed:
How Use The Camera To Add Images To Items By Using Account - Item Number iOS
How To Add Images To An Item Using A Barcode On The Tag iOS
3.Tap the Import button.
4.If you want to search for images on your iCloud drive you can do that by default. Simply find the images on the drive and select them.
5.You can also tap the Browse button to go back to the main Import menu.
6.Tap the More Locations button.
7.From here you can Turn On the different sources you would like to grab images from.