1. On the event page, tap the "People" tab.

2. Tap the Plus button.

3. Search for people by typing their name.

4. Tap a person to add them to the list.

5. If you want to remove a selected person, double tap the person's name to remove them from the list.

6. Tap the "Done" button to invite the people to your event.

7. Everyone that you invited will be displayed below. 

*Note: People with locked accounts can be added to events but people with inactive accounts cannot.