There is nothing that needs to be done...all the bands are connected as long as everyone is linked/on your MDE account. Maybe the poster and her husband have separate MDE accounts? For us, we're all on one account (mine) so anyone in our party could scan their bands without doing anything more.
Also, FYI...for our last trip, I was able to order the Photopass Archive CD at the pre-trip discount in mid-August, and that option was taken away two days later (it's no longer available). It was a short trip, the only ride with photo we were going to do was Splash, we don't normally get ride photos anyway, and we elected to save the $30 by buying the CD vs. Memory Maker.
When the CD came the Splash ride photos were included on it, even though we didn't buy them separately and even though we didn't have Memory Maker! All of our photos from CRT (the one we got a hard copy of, plus all the other ones the Photopass photographer took) were all on there as well.
So, if anyone has a leftover Archive CD pre-purchase credit out there, you might want to consider going ahead and using it and not upgrading to Memory Maker. It looks like all the Memory Maker elements get thrown on the CD!