PiPO Max-M7 pro 3G - Manual (Page 18)

１８
You may choose what ever screen lock you like, pattern, PIN, password.
Bellowing I select Pattern as an example.
Secondly, after setting the screen lock, you could add A new VPN.
Create your VPN name, input the server address, and then click “save”
[Input What ever name you want to show on the VPN]
And then input your VPN account and password