1. After opening the case, click the + button at the top right corner of the attachments panel.
2. Click on the respective menu item displaying the types of attachment(s) you want to remove.
3. A widget will appear showing the list of attachments of your selected type, showing a Trash icon next to each file already uploaded. On pressing the Trash icon, a dialog will appear asking for confirmation. Press Okay to confirm removal.
4. You can use the same widget to add new attachments. You can browse to the file or you can drag and drop the file onto this widget. After you are done choosing the files, press ‘Add’ to upload the files.