Routing over IPSec site to site VPN

Question

is anyone able to advise how i can accomplish this, https://community.sophos.com/kb/en-us/115661, but for all traffic from a particular network/vlan rather than ALL traffic? 
 
 I have a Vlan in site B that i would like to route all of its traffic over to site a via the site-site vpn. but i would like other networks configured in site b to use the local internet as normal.

BAlfson · Answer

Simple. Just have "Internet IPv4" in 'Remote Networks' in Site B and 'Local Networks' in Site A. Put the "(Network)" object for the VLAN in 'Local Networks' in Site B and an equivalent Network object in 'Remote Networks' in Site A. 
 If you want Site A and Site B networks to communicate with each other, build one or more additional tunnels. 
 Cheers - Bob