You can do this in one of two ways.
Go to Person Record> Event>Viewing.
Find the Property which the person wishes to view.
Enter the date and time, the name of the accompanying viewer if applicable and a reminder if required.
Click on Save.
You will be prompted to run letters once the appointment has been confirmed with both parties.
Or
Got to the Property Record>Event>Viewing.
Find the Person who wishes to view the property
Enter the date and time, the name of the accompanying viewer if applicable and a reminder if required.
Click Save.
You will be prompted to run letters once the appointment has been confirmed with both parties.