How to share Uber location with someone who's expecting you?

iOS & iPadOS

Hi all. I'm going to a friend's later this week. I've heard it's possible to share the car's impending arrival with the personw ho is expecting you. she does not have the Uber app, I do. Howdo I do that? It's not crucial but I'd like to provide her updates so she can come out to get us. Thanks for any help.