Adopting Teen question - FREETIME

[FratBrat44]

I have all extension pacs including FREETIME.  A teen sim's parent died.  I moved him into a another household and will use the insimenator to make his relationship with the new couple - child.  But I was wondering if there is any other way to make a sim couple adopt one of the teenage sims you have created yourself.  Any suggestions?  Also, when I have done this before I noticed that the "adopted" teen sim keeps his own last name - that's cool, I assume that would be normal, but is there an easy when to change his name to match the rest of the family?

[veggiespork]

He could marry someone in the family.

lol I don't really know...