Selecting multiple items for copy paste ("rubber band")

Hi. In your excellent instructional videos, you often select and move multiple items (I think you call it a “rubber band”). Please can you tell me how to do this (if you can in Windows)? Perhaps it might be worth including some keyboard “shortcuts” in the user guide, for those of us just starting out.
Thanks!

It should work the same as every other app. Do what you would do with desktop items.

It doesn’t always copy what you hope