Two APN/PGW per UI

Hello Guys and thanks a lot for a great product. Have a question which I couldn't find in documentation. Is it possible to use two separate PGWs with NextEPC? Each PGW represents a different network (i.e one for Internet, another for some kind of LAN). I also would like to add two different APNs per UI in this scenario. I have already done a singe PGW configuration with default 'internet' APN, but stuck a bit with the second PGW. I will highly appreciate for any thoughts, advise or configuration examples. Thanks in advance. BR, Pavel