Organizing households for multiple families/multigenerational homes

I have read and reread the Church procedure for organizing families/households living at the same address. Multigenerational families / multigenerational homes/households can be quite common. Not sure how the households should be organized in this situation. Also, common for single adults and young single adults children living in the home with parents and family.

The way households are organized in the system can be helpful for specific needs of the members. However, it can create problems for directories, reports, assignments, household communications (phone calls and emails) and seeing how people are connected to each other and living at the same house.

I don't know as there is a hard and fast rule. I would expect any children who are married and/or have children would be their own household.

I think the thing affected the most is the assignment of Ministers from the EQ as they're assigned by household. There is some affect on statistics, but I doubt if it's anything significant. I'm not sure what advantage there would be to have 3/3+ generations listed in a single household. There's no rule that says each household has to have a unique address.

As far as YSA living at home, it appears many units have adopted an informal policy that once a child leaves home, even for a mission, they are their own household. Even if they later return to live in their parent's house.

Personally, I'd take as my guiding principle - what arrangement best serves the member's needs.