How do i use share my location? (not current)

Okay so I have been checking out some of the new features and from the messages app when you click on the new "DETAILS" tab you have two new options
1. Share my current location which is pretty much a shortcut to sharing location from maps app. I understand how this one works

2. Share my location (1hr, rest of day, or always)
I activate it for one hour and get the little notification in my message window saying "you started sharong your location with John Doe"

But how does the person on the other end use it i cant seem to figure it out.

Is...
A) the option not fully functioning yet
B) the person needs IOS8
C) you idiot its so easy you just gotta ......

 

I guess im not the only one that had no idea how this is supposed to work?

 

yes indeed it was not having the find my friends app.

I wish they just integrated it into the maps app. where you can simply search your friend where you would normally search places and/or addresses, or even a separate tab in maps called "friends".

but my comment will not make it magically happen so find my friends app will do.

thanks guys