Engic option panel is built with the famous Redux Framework and gives you many configuration options in a user-friendly environment. Option panel can be found under Appearance > Theme Options from the main WordPress navigation and then you will be able to affect many core features of Corpus. All the options have detailed descriptions in order to explain their purpose.
Most of the changes you will make there will affect your site globally. In most cases you can override these settings within the in-page settings.