Within a customer journey, you can create a task, phone call or appointment. The problem is that you can only assign it to the customer journey owner, contact owner, or creator of the contact. I have worked with several companies and this does not work for any of them. They all want the ability to assign to the sales person or contact account lead. Please broaden the field to select more than the 3 available. Make it like Dynamic Content where we can navigate to the field on the Contact entity.