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Internet Download Accelerator user guide.
Options - Downloads - Categories
Show cloud folders
With this option enabled, various cloud services (Dropbox, Google Drive, OneDrive, Yandex.Disk, Box, Mega and others) will be displayed in the category list. When you are adding a download or after the download is complete you can choose the desired category and the file will be saved using the corresponding cloud service.
( i ) IDA updates the list of the available cloud services on start.
Show subcategory downloads in a category
If this flag is set, IDA will show in the download list not only downloads of a category but also downloads of all its subcategories.
( i ) Changing this option will not change any download folder.