In some cases, data stored in Sitecore is used to dynamically generate content on certain pages. This includes the location search tool, physician profiles, etc. Managing this content follows a different precedure than editing normal pages.
Sometimes this data is managed outside Sitecore. The data might be stored in an external database system and pulled into Sitecore via an API. If this is the case, be careful when updating this content inside Sitecore. Your changes may be lost or overwritten next time Sitecore is synchronized with the external system.
Adding an event list to the event page
Adding clinical trials
Manually creating a location page
Other locations: https://www.screencast.com/t/4U0q9uXaZ