Task:  Open the Gmail App, Toggle on the switch for notification and set the notification on 1 week before at 9 AM of Task Feedback Meeting Event. 
Steps:
Open the Gmail App
Click on the three horizontal line 
Click on the Calendar Option 
Open the Task Feedback Meeting 
Click on the Edit Button 
Switch on the Toggle Button for Notifications 
Click on the Add Notification Section 
Select the  1 week before at 9 AM Notification 
Click on the Save button