About the weapon animations sheets

How can I use them? If I use the Yanfly plugin when I attack using my weapon I see 15 weapons attacking all the time. I know I need images of 3 animations per weapon but all I can found is full sheets of 15. Is there a trick to resize each one?

the default weapon sheets are set in the database for the weapon type/motions.
yanfly's plugin is intended for additional weapons (because the original sheets are size-limited) and as such it does not use them, but you need to give your additional weapons as single weapon files.