Docker SAML integration with Okta

Our org has purchased the appropriate seats for SSO and we are currently integrating it with our Okta IDP. In the docs, it’s mentioned that a Name attribute is supported as optional (Single Sign-on FAQs | Docker Documentation), we’d like to implement that but our IDP only supports First Name and Last Name fields. Do you have separate attributes for first and last that we can use?

The docs also refer to a single signout URL, but I cannot find that in the SAML settings page or the docs, can the docs be updated to reflect whether this is a supported feature or not? Thanks