I am running a Virtual Machine with below use case.

HOST OS : Windows 10
Hypervisor : Oracle VirtualBox
VM OS : Ubuntu 21

Problem: VirtualBox has a option to share folder from Host OS and VM. A Host OS folder is mapped to a folder in Guest OS. I have added C:UsersUserNameDownloads from host to /etc/data in VM. But in my case I could see that the sharing is not working. Even the Guest OS folder is not available(Please refer to the attached image).

Am I doing anything wrong or what way it should work?

Image of Sharing Folder not Available