Sometimes, when I'm organising notes and documents, I like to group them together and use paper clips to hold those groups together. When I start stacking those groups of documents on top of each other, 1/a few stacks' paperclips push off.
How can I stop the paperclips from falling off the paper? Would I be best just to staple them together? I put them on exactly like the image below
To Clarify: I want to know how to stop it when there are multiple stacks, not 1 big stack.