Change Folder name


I have the WD My Cloud Home 4TB.

When I log in into my wd account trough the browser, I get in my cloud and I want to change the Name of my PC that I SYNC to the cloud.

Everything works fine. The problem is, the cloud names my PC “Sync from desktop”, so I want to change that name into example “Office”. So, but when I want to sync a new folder on that PC, the cloud create a new folder in the cloud named again “Sync from desktop”

How to learn the cloud that “Office” folder is my PC adn that he have to sync all from this PC to this folder?