If you are using the Simple Rostering, click here to use the tasks feature to schedule your lunch breaks.
The only reason you would schedule lunch in the Roster is if you want the time taken for lunch to be accounted for in the Wages Report.
To do this, go to Roster.
Click the + next to the operator who you'd like to schedule Lunch for. On the right hand side panel choose Lunch from Roster Type drop down menu. If you haven't got lunch there, click here to learn how to create your roster types.
Choose the days and the time lunch starts and finishes, and Save.
If you're unsure of how to add multiple Roster Type item's for one day, check out the following article:
Lunch Using the Tasks Feature
If you don't need to track wages for Lunch, you can use the Tasks feature to schedule lunch on your Appointments Page instead of your Roster. This way is the same as Simple Rostering, you can learn how to do this here.