What are Contact Roles
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Getting Started with Contact Roles
You have to be an Organisation Admin to create and edit Contact Roles
Steps
Go to the My Apps menu
Select Contacts
Go to the More Options menu on the Contacts page
Select Contact roles
From here you can create, edit and delete Contact Roles
Now when you go to a Contact Profile page, you will see a box on the left side called Roles. From here you can give a contract one or more roles