1. Select Project and, in the Appointment section, click 'Today' or 'Upcoming'. 

2. Tap the button on the top right to toggle between list view and calendar view. You can also toggle between the list of appointments assigned to you versus to other members of your team.

3. Select the appointment in question. 

4. Click 'Submit Checklist'.

5. Proceed with each section. For the checklists, tap on the checkbox once to mark it as a 'tick'. Tap again to mark it as a 'cross', and input any remarks in the text box that appears. When it has been completed, click 'Submit' and click 'Yes' at the confirmation pop up box.