Hi Mark,
Currently there is no setting for this, but what you can do is have the transactions in its own section and hide the section on screen load if if the Contacts SpecialType is not 'Contact'.
-Michael
										    
									     
									    Michael Melo
Product Manager
Method Integration Inc.
Website: http://www.method.me
LinkedIn: http://www.linkedin.com/in/MichaelMelo