Shared Folders

If your talking about the name on one of the guest computers you can easily change the name by right clicking on the folder and select rename.

If your talking about the name on the host computer I am pretty sure you will break the share on guest computers. Windows will give you a warning if you try to rename a shared folder. If you do change the name you will have to right click and select " Properties " then select share to share it again.

I usually right click on shared drives that I want to find easily and select " Map network drive " when in file explorer and clicking on " Network ", This way they show up in file explorer under "This PC"

You mean this: The name of the shared folder ? Then Add a new Name then hi-lite the old name from drop down list, click Remove.