Hi Dan. I'd also suggest the ue of links thru the Bio section, very flexible that way. I had a situation where a relative adopted 4 chinese girls, one at a time. She was married at the time but is now divorced. I unlinked her and her spouse from each other's pages.
I added each girl as a new person, using their Chinese names, and they are a singleton tree of one person. Then, I linked in their Bio to each of the adoptive parents.
On each adoptive parent's Bio, I linked back to each girl. This way one can stat in one family, pass thru the girl's tree, and then pass over to the other divorced spouse's tree.
Works very well and pretty easy to set up. I'd provide a link, but the Bio is private due to age...