"They make an elevator."

Translation: 그녀들이 엘리베이터를 만들어요.

[FurstWasser]

Im not sure if 그들 and 그녀들 is exclusively male and female groups respectively, or the latter is a mixture of both. Can someone help clarify this?

[CooperReid4]

그녀 is technically she but nobody uses it here in korea. You would just say 그들 unless it's written then you can use 그녀들 without it being weird

[JVZi2]

그들이 엘리베이터를 만들어요.