Each section will pave a _props.pcf file. On a section other than the homepage, you can edit the Section Title and Section Breadcrumb. The _props.pcf file for a homepage is where you can update the contact information in the footer for your site and add additional breadcrumbs preceding the ones for this site. Settings you choose in a _props.pcf file will carry through to all files and folders within that folder.
Additional breadcrumbs can be added preceding those for your site. This is commonly used on some general webpages, like the Faculty/Staff page including a breadcrumb to the Michigan Tech homepage or one of the CSA or COE departments including a breadcrumb back to the college homepage.