• The Calendar Screen 
• Click 'View'
• Click 'Current View' 
• Click 'View by Category' 
• Search for categories labelled with the event type you wish to change

To update: 

• Open (double-click) the appointment and change or add new details 
• Click ‘Save and Close’

To delete: 

• Highlight unwanted appointments and click 'delete' 
• Return to your favourite Calendar View