'Root Certificate' option not visible on 'Security' Screen


I am using Couchbase 6 on Windows 10.

  1. I would like to opt for Certificate based validation. Hence, trying to enable ‘client Certificate’ option as well to view ‘Root Certificate’ option. However no options are visible on ‘Security’ screen. I am using Full Admin user for login.

  1. Moreover, currently accessing couchbase console as " http://localhost:8091", however while trying to connect as “https”//localhost:18091", it is throwing error as"…Unable to connect…"

Any help on those above 2 topics would be appreciated.