If you need to add this IP addresses to DFL, it's possible
1) Objects > Address book > InterfaceAddresses
Add wan1_ip2=41.x.x.1, wan1_net2=41.x.x.y/z, wan1_ip3=41.x.x.1, wan1_net3=41.x.x.y/z
You can calculate networks via http://www.subnet-calculator.com/
If wan1_net2 is the same with wan1_net3, don't make duplicates
2) Interfaces > ARP
Add ARP publish wan1_ip2, wan1_ip3 on WAN1
3) Routing > Routing tables > main
Add routes
core wan1_ip2 <no gateway> 0
core wan1_ip3 <no gateway> 0
wan1 wan1_net2 <no gateway> 100
wan1 wan1_net3 <no gateway> 100
Next, make necessary IP rules
But... if you want to assign this IP addresses to some PC in local network or you have PPPoE instead of just IP - logic will be different