SG 310 UTM - Can these Firewalls , be integrated in to the Sophos Central

HI Folks,

we have 2x sg310 UTM 9 boxes , we are currently moving over to central from sec,  and we have the sg310's and sec connecting through a group , in this group we have web filtering rules where we block websites . this is to provide the web filtering rule for the laptops that are outside if the Lan, we would then get the laptops to vpn in to the lan to get the updates

how do we replicate these rules on central? and what happens when a laptop comes in to the Lan, whos in charge firewall or central.

i can see that there is a part of the be integrated in to the  Sophos Central Firewall Management - Dashboard i may be able to add this in here. but not sure what the benefits would be.

1.could i add this firewall to central

2.would it work the same as currently working with sec, albeit that we would not now require to vpn in to the main lan

thanks 

james