What is the most logical next event?

How to establish an office filing system
Decide on a filing system.
Whatever it is, it must make sense, so you'll know exactly where every piece of paper is. Your options are :
Alphabetical.
This system is best when most of your files are going to be names of clients, patients or customers. Subject or category: most file systems are organized by subject or category, which works well when set up correctly, but can also be the most confusing when it's not.