SPAN issues Fortigate 200D on 6.0.10

Guys, help! I am trying to setup SPANning for a DarkTrace server on my 200D.

What I'm trying to fiogure out is this:

LAN Switch - ints 1&2

WAN1 and WAN2 ISP connections in an SDWAN config

Int 16 - internal MPLS to remote sites

Ports 3-8, 11&12 are all open. I'd like to see all traffic on the LAN switch. WAN connections, and MPLS port... how would I go about doing that?

I'm at a loss!