To restore specific files from your local backups you will navigate to your "Backups" page (BackupBuddy -> Backups)and click on the "Restore Backup" tab on the page. Once you are there you can choose the backup you intend to restore files from and click on "Restore Files".
Click on the "Restore Files" button.
You'll then be taken to your backed up directories and files.
Navigate to the correct directory/files you'd like to restore and click the checkbox.
After you have picked your files/folders, you'll proceed with the restore.
You will be prompted to verify that you want to continue with the restore.