If you have an advanced edition account, the main console screen will show the “Profile” summary
Click into the “File explorer”, and select the backup set you wish to remove past jobs from.
Click “Show jobs view”
Using the rubbish-bin icon, click the backup job to remove the changed files (ie. files that are in the retention area) from a past job from the server. Note: This will not remove files in the data area – to do that you will need to follow this guide.