When accessing your calendar, you will have displayed all of the tasks assigned to you, regardless of their type.
You will be able to directly recognize the maintenance plans' tasks from non maintenance plans' tasks thanks to calendar's symbol next to the task name.
You have the possibility to use the filters available to view maintenance plans tasks only, or non maintenance plans' tasks only, simply by ticking the appropriate box.
You will see that you also have the opportunity to filter by task's status, by checking or unchecking the relevant filter: late, late and started, ongoing, planned, done.