SSO for PowerShell in WAC

So we have WAC setup working with Delegated access for the servers with no login prompts, however once you attempt to load PowerShell it does prompt for creds, I take it this is by default to re-verify the creds. The problem we have is that we are transitioning to a PAM solution and will not have access to the passwords, does anyone know if there is a way to force it to use delegation or to inject the creds of the service account running WAC?