To edit the landing page, select "Landing Page" within the vertical grey bar along the left hand side of "Company Settings."
Here, you can edit various aspects of the landing page:
You can connect a new or additional Application or Registration to the landing page by clicking the "Add Application/Registration +" button in the bottom right hand corner.
You can edit, add or delete Welcome Content, which is any additional text such as instructions or welcome language to applicants.
You can edit the title of the Application or Registration, which is what applicants will see.