PF sense additional LAN

Hello,

I need some help for the PF sense LAN interface.

LAN :  192.168.3.1

WN  : *.*.*.*

So my current user series is 192.168.3.0/24 and all user access the internet via proxy using this firewall. However I have one more set of users whos IP series is 192.168.10.0/24.

So I would like to add additional LAN or additional IP like 192.168.10.1 in the firewall so that they can also access the internet via proxy.

Please suggest me how do I install additional IP in PF sense.

I am using 2.2.2-RELEASE (i386)
built on Mon Apr 13 20:10:33 CDT 2015