Task: I don't want to miss the marathon race going to happen in the office premises for kids welfare. Create a reminder with the title marathon for 01/10/23 at 8:45 AM and add an advance reminder to 15 minutes.
Steps:
Launch the Remider app
Click on the plus icon at the bottom right corner of the screen
Click on the Title tab
Add the title as Marathon
Go to the date tab
Click on the V forward button next to September 2023
Set the reminder date to 01 October 2023 
Click on the OK button
Go to the Time tab
Set the Hours to 08
Set the minutes to 45
Select the AM time zone
Click on the OK button
Click on the Adv. reminder tab
Select the 15 minutes option
Click on the tick button at the bottom right corner of the screen