Openstack 13 enable Octavia.

Hi Folks,
on OSP 13 LB should be already available. It is visible in horizon but it cannot be configured.
I have this instruction which does not work properly.
https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/13/html/networking_guide/sec-octavia

Any suggestion enabling octavia?

Thanks and Best Regards

Niko