HOW TO Edit Metadata for Multiple Files
To edit metadata for multiple files at once you need to select the files you want to add the metadata to. And click “edit”.
A new window will open where you can choose what metadata or information you would like to edit for the selected files. From the drop-down list select what you would like to do with the new information (or you can remove existing information).
Select the file and edit
The new keyword is now applied to all selected files.