"You increase the family."
Translation:Você aumenta a família.
No problems in this translation, but no one would say that. A equivalent would be: "Você faz parte da família." means 'make part'.
Yeah, but the sentence might as well be about having another baby, or welcoming a new friend into the family as you point our, or even welcoming a new coworker into the company culture. This is just a stub.