Authentication via SimpleSAMLphp Identity Provider

I have been trying to configure authentication via IDP which is running on simplesaml unsuccessfully. Initially we had an IDP based on shibboleth and it worked without a problem. I am following the guide Authentication — Indico 3.0.3 documentation and I have modified my configs to suit our IDP configs as well.

With shibolleth, there are configs to be added on /etc/apache2/sites-available/indico.conf which are very clear here Apache — Indico 3.0.3 documentation. What do I have to add to the config incase of saml.

I would appreciate some pointers from anyone who has done this before.