Navigate to: Main Menu > Websites > Select a website > Click the IIS applications tab.
This tool allows you to convert specific sub-folders within your website into independent IIS Applications. This is necessary if you are hosting a separate project (like a blog, a forum, or an API) inside a sub-directory (e.g., yoursite.com/blog) that requires its own unique web.config file.
Because these sub-applications run inside the same worker process as your main website, they share the same Application Pool. This imposes specific constraints:
To revert a sub-application back to a standard folder, click the Delete icon (X) next to its path. This removes the IIS application configuration but does not delete the actual files.