When working with and editing User Profile properties in SharePoint, you'll notice there is a section of the EditProperty.aspx page which gives a count of the number of profiles currently using that particular profile property, e.g.: However...

There is no way in the UI or via an out of the box PowerShell command to change the application pool used by a web application. Don't bother trying to create one manually in IIS and setting the web app to use this, it won't work because the application...