N.B .: The objectives must have been shared by your professionals in order to be visible.
Go to the menu (Three vertical lines at the top left of the application);
Click on the "Objectives" tab;
Select the goal you want to see;
You will be able to see the objective and its sub-objectives if applicable.
You will be able to mark your secondary objectives as "completed". To do this, simply click on the blue check mark to the right of the goal achieved.