How to Pre-populate Folders within a newly Created Parent Folder.

Hello,

So the idea is to create a parent folder manually in SharePoint Online. When that folder is created, 4 folders with be created automatically within that parent folder. I wasn't able to find a Work Flow to automate that process. I was advice that I can sync the SharePoint Site to local Computer and use a PowerShell Script to create the main Folder, then the script will create the other four folders with static names.

Can someone help with that?

Ryan