...
Choose a name for your identity provider. This is the user-facing name, so choose a name your users will recognize. This can be changed later.
...
2. Prepare IDP
Copy and save the Callback URL for later. You will need this when configuring Okta
...
No need to do anything. The Redirect URL is automatically fetched from the metadata you imported in the previous step.
...
5. Certificate
This step shows the certificate used to validate the SAML messages.
...
6. Summary
Check that everything looks good and submit your setup 
...