ElasticCloud Standard - Kibana and ElasticSearch: How to configure custom TLS certificate?

Hi,

When I signup the ElasticCloud Standard and created a deployment. The system gives me a default endpoint ie. https://xxxxxxxx.region.cloud-provider.elastic-cloud.com:9243/.

I've configured CNAME from our DNS server with our domain name (kibana.example.com) to https://xxxxxxxx.region.cloud-provider.elastic-cloud.com:9243/.

The challenge is that how could I configure the SSL/TLS certificates from the Admin Web UI of ElasticCloud? I would really appreciate if someone has done this before to point me out a correct direction.

Cheers,
Elvis