You can amend filenames when you download them. To do this follow these simple steps:

1. Select a file by clicking the tick box in the top left hand corner of the file

2. Click download in the right hand panel menu

3. You will see this interface. Tick the amend file names option.

4. Enter in the text you want to add before or after the filename. You can add spaces or underscores if you want.

5. Click download. All the files download will have the additional text in them.