[ubuntu] Problem sharing files

Hi all,

VirtualBox
========
Host - Ubuntu 22.04
VM - Kubuntu 22.04

It took me more than an hour unable to sort out the problem of sharing files btw Ubunu 22.04 Host and Kubuntu 22.04 VM

VirtualBox Guest Edition has been installed

sharefolder has been created on Kubuntu

On Kubuntu Terminal:
$ ls -ald /home/satimis/sharefolder/Also having run;
$ sudo usermod -a -G vboxsf "$USER"

Drag files from Ubuntu (host) Transfer folder
to:
Kubuntu VM sharefolder doesn't work

Is there a solution?
Or I have to install Samba to do the job?

Please help.

Thanks

Regards