It's extremely important for any Mac, iPhone, or iPad user that they have access to their files anywhere and at anytime. Especially when it comes to their Documents which are usually stored in the Documents Folder.
With iCloud, this is very easy to do and here's how to do it:
- Go to    > System Preferences.
- Click on either Your Name, or the Apple ID icon on the upper-right of that window.
- Scroll down until you see the iCloud option. Â
- Click it to select it.
- Sign in to iCloud if prompted.
- Put a Check Mark next to the iCloud option
- Now click the [Options] button.Â
- In this area, place a checkmark next to the Desktop & Documents Folder.
- Click [DONE] when finished.Â
- That's it.Â
After the iMac and iCloud sync all files, it will automatically save any changes to any files that you may create, edit, and/or save from your Mac, into iCloud, and then you can have access to those files on other connected machines.