Task: I forgot to add my friend Natalie Larson's Gmail ID to the "Employment Fair" event, so edit my event and add her ID: natalie.larson1998@gmail.com.
Steps:
click on the Three lines at the top left corner.
Select the first option Schedule.
Click on the Event "EMPLOYMENT FAIR"
click on the Pen Icon at the top right .
Click on the Tab "Add People".
Type Id-natalie.larson1998@gmail.com in the Input box at the top.
select the id.
click on Done at the  top right corner.
click on the Save at the top right corner.
click on the send.