When you have accessed the class you want to score you will be offered a range of templates in line with the discipline you selected when you set up the event Group.
All disciplines have a Basic - ranking only template that allows you to record the placings only:
You have the option to:
Amend the Level
Indicate if they rode on a Class Ticket
Set a Status eg. NS = No Show
Input a placing
Click 3 dots and Save or Save All