You can enter information into a Task to then insert the task into the calendar – if you put into the Task field the details of the task such as ‘Meeting’ and the address and link that task to your contact this will then pull that information into the Calendar if you tick the insert task into calendar checkbox.
Please see the two screenshots below to demonstrate this:
The address has been added into the Task field.
The 'Insert into calendar' checkbox has been selected:
When the task is created this will then add the task into the Calendar section as shown below in red:
Click on the calendar event to open up the details to view the full information as shown below: