Recovery Manager Portal requires the following IIS features:
Common HTTP Features
Static Content
Default Document
Application Development
ASP.NET
.NET Extensibility
ISAPI Extensions
ISAPI Filters
Health and Diagnostics
HTTP Logging
Security
Windows Authentication
Request Filtering
Performance
Static Content Compression
Management Tools
IIS ManagementConsole
There is no need to configure IIS, the setup will create an app pool and site and configures it, also setup may install the IIS roles itself if the server does not have one, so minimum actions are normally required.