In song-editor in >= 1.1.3 you can use the block-tool and create a block-selection, then copy that to a new pos in the project, but alas there is a bad flaw in current RCs. The automation will not be correctly copied.
In piano-roll you can use all win-shortcuts for copy paste, since 1.0
Oki, that was the dry answer. A more elaborated one would be a new Q:
Sure it is beneficial for your song to have directly copied sequences?