To set date format we will need dconf-editor tool, standart features doesn't support custom format.
$ sudo apt install dconf-tools
and start tool:
Find path in tree: com -> canonical -> indicator -> datetime and change params:
custom-time-format: %Y-%m-%d %...
To get the VPN connection you need to install some extra packages:
Update your system (you can skip this step if your system is already up to date):
sudo apt-get update && sudo apt-get upg...