Into your ITRP account go to settings icon (top set of icons - the rightmost one), then select Single Sign-On tap.
You will see SAML infomation, It will ask for the following information::
Check the Enabled box for the Single Sign-On option
Copy the following into Remote logout URL:
Sign in to the Okta Admin app to have this variable generated for you.Copy the following into SAML SSO URL:
Sign in to the Okta Admin app to have this variable generated for you.Copy the following into Certificate fingerprint:
Sign in to the Okta Admin app to have this variable generated for you.Click the Save button