To access Creatus Header Options please go to Appearance > Theme Settings and locate the Header tab in the left side vertical menu. Header options section will help you control header layout, sticky header, header toolbar and it is split in 3 main categories.
General tab contains theme options that will help you control header layout type, header box style, header menu position and header width containment. Depending on layout type you can also see additional option such as menu container width, active, inactive hovered menu link colors and socials and branding on/off switch.
Sticky tab contains options that will help you control sticky header type, background as well as readjust sticky header menu links colors if needed.
Header brightness tab
Header brightness tab contains options that will help you control dark sections header style and light sections header style.
Toolbar tab contains options that will help you control header toolbar style, toolbar content, toolbar slogan options and toolbar navigation links style.