Landing pages are available only through the use of an app so aside from the configuration there is no back-end system use…... (something along these lines, expand if necessary)
Settings
Configuration of mobile passes is possible via the system settings. Click on your logged-in user name in the top right-hand-corner of the screen > Settings > Platform > Landing Pages.
Reference Material
You may also find it useful to refer to the following manuals for further reading in relation to Landing Pages.