Blastream allows you to delete a document from your document library.

If you just want to remove a document from the live, you must do so by the icon
on the list of video sources
To do this, open your document library by clicking on the icon
at the bottom of the screen or on the icon
under the chat.Then click on the icon
to remove the document from your library.

Blastream will always ask you for confirmation before deleting a document