To add subids to your affiliate links for Delta Squadron, you can add &s=[subid] to the end of your affiliate link. I'll hunt around a little bit more in there, but i believe he describes it in the affiliate orientation manual.
I typically shy away from directly linking to any launch i am working on in my other posts as to not give unfair promotion within this board. As this is for help and is strictly not a promotion, i will include one here to illustrate the link.
Within the system Mike is using, we add l= to identify landing pages. As you may see, the different links to his videos have l=2, l=3, etc.