Adding company contact info Add a customer and fill in general information. Click the Address tab. Click in the Communications section. Select a type of communication from the drop-down menu as configured in the Configuration menu, for example Telephone. Fill in a value for the type of communication, for example a telephone number. Click outside of the field to add the value. Tip: Click to delete the line. Click in the task bar to save any changes. Next, you can add contacts.