How do I drag-and-drop files from my computer to a Resources folder?
Go to Resources.
Select the Resources tool from the Tool Menu of your site.
Click Add, then Upload Files.
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To the right of the folder you want to drag-and-drop files, from the Add drop-down menu, select Upload Files.
This displays the upload Files page.
Drag and drop files from your computer.
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Drag files from your computer and drop them in box marked "Drop files to upload".
This will display thumbnails of the files that will be uploaded.
Click Continue.
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This uploads the files.
View files in Resources.
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The files are now located inside the selected Resources folder.