Use

Joint possessives are used to show that multiple people or things possess the same object or objects.

Example:

Kate and Tom’s children are beautiful.

Explanation:

The children belong to both Kate and Tom.

How to build

Of the two nouns that possess the thing, add -’s to the second noun.

• Kate and Tome have the same children → Kate and Tom’s children

More Examples

• Dawnson and Walacot’s campaign was successful.

I was sad when my mother and father’s divorced.