The PI just need power and network cable plugged in. And of course the EnviR plugged in also.
Just open for example chrome or firefox and type in the adressbar 192.168.0.102 and press enter.
If we are in luck it should open the measureit website.
It depends on what IPs your router give to your PC. If you do not get the measureit website we had to find out which IP address the PI gets from your router.
Try a software to find it out.
Google give me this. It looks OK for our needs:
Thomas