I have a web site (used to manage various parts of our software) that needs the permissions required to start/stop other application pools.

I've created a user and set the app pool identity to custom, however the web app still can't start/stop the app pools. I get the following Error:

System.UnauthorizedAccessException: Filename: redirection.config
Error: Cannot read configuration file due to insufficient permissions
   at Microsoft.Web.Administration.Interop.AppHostWritableAdminManager.GetAdminSection(String bstrSectionName, String bstrSectionPath)
   at Microsoft.Web.Administration.Configuration.GetSectionInternal(ConfigurationSection section, String sectionPath, String locationPath)
   at Microsoft.Web.Administration.ServerManager.get_ApplicationPoolsSection()
   at Microsoft.Web.Administration.ServerManager.get_ApplicationPools()

Discussion here suggests setting the application pool to local system or administrator, this does work, but I don't want to do this for security reasons (external support will need access this site).

I did give the user higher permissions (as suggested here), starting by making it part of the local administrators group, but initially this didn't work, and giving the user read/write/mod permission on C:\Windows\System32\inetsrv\config also didn't work. I must have done something wrong as local administrator now works, however this still isn't what I want.

So can anyone suggest the permissions I need to add to this user, and how can I apply them?

An answer my problem (but different question) is here, but to clarify, I think I need to give an individual user "IIS Runtime Operation Permissions", does anyone know how to do this, if indeed this is the permissions I require?