The setting is in: Administration Center > Features > Contacts & Companies.
Automatically link contact activities to company (journals, documents and emails) defines whether the activity (creating relations) that is done on contact with relation to a company will be assigned to the company too. eWay-CRM will automatically create relations with the company so you don't need them to create manually.
Click the Automatically link contact activities to company (journals, documents and emails) setting to turn it on/off.
If the function is turned on, if you have contact related to a company, the company will have the same relations as you add to the contact.
If the function is turned off, activity is not propagated to the company.
When you change the settings, be sure to click Save. For more information, go to Features.