Upload media directly from Photos or Files into a project.
Tap the purple PLUS icon on the top right corner of your project and tap Upload. Choose to upload from your photos library or files and select the asset to begin uploading.
Upload multiple files at a time by selecting them and then choosing "Done" on the top right.
Note: This same PLUS icon is where you can create new folders, new restricted folders, new share links, and add to an existing share link.