SAML: How to configure Okta as SAML Service Provider

We have a requirement to configure Okta as SP and Active directory as IDP.

I have tried SAML service provider option. In this option it is asking “Service Provider Entity Id”. I think if Okta is configured as Service provider, it should generate the SP Entity ID.

For all the options, Okta is asking for SP entity id.

Can you please send me the steps where I can configure Okta as Service provider.