When setting up a campaign, from the Customize menu within the campaign, you can select the entities and connections that you want to use in the campaign. By default, People is enabled in every campaign but you can add/remove entities by choose from the Entity Types selection in the General Tab. Once selected, you can choose the Primary Entity type (this is the default entity that will appear on the Wall Chart). Finally, you can add any Connection Types as long as both types of entities appear in the campaign. Make sure to Save Changes before leaving the screen.