Admin user can restrict other users from changing the Bucket, Folder, and Access Level fields while uploading the files. 

Follow the steps to achieve the same: 

  • Click Edit Page -> Click on the Drag, Drop & Upload Files to Amazon S3 Lightning Component 
  • Check the following checkboxes according to your use case in the right panel.
  • Click Save and Activate the page if you haven't.
  • All the fields will be shown as disabled and users will not be able to change the predefined Bucket, Folder, and Access Level fields while uploading files to Amazon S3 


PS: View Drag, Drop & Upload Files to Amazon S3, a Salesforce AppExchange app for moving files from Salesforce to Amazon S3: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3000000B5ZPqEAN