Go to your Trip Itinerary page and click on to your itinerary popup on the left hand side of your screen.
Click on the Share button on the top left corner of the itinerary popup:
Select one of the sharing options below:
Sharing to the Client App
To share to the PIE client app, check mark their name at the bottom of this pop-up page. Their email on the trip must match the email they used to sign up to the app. The other way would be to type their email in the email line to share to their app.