Yes. You can easily copy multimedia assets using keyboard shortcuts at once.
To copy assets
Select the assets of a Creative in the Canvas,
Copy the assets using any of the following keyboard shortcuts:
Press and hold the ⌘ key, then press the C key, then release. (macOS)
Press and hold the Ctrl key, then press the C key, then release. (Windows)
Navigate to the desired canvas and paste the assets using any of the following keyboard shortcuts:
Press and hold the ⌘ key, then press the V key, then release. (macOS)
Press and hold the Ctrl key, then press the V key, then release. (Windows)