Hotspot with SSL certifiacte

hi,
i am trying to use SSL request for Hotspot user for logging
i import certi & it displaying too in certificate menu

but i am not able to find IP–> services–>> hotspot-ssl

how to enable that , i am using 5.18

I think you just set the login-by to https.

/ip hotspot profile
set X login-by=https

If you use an external radius server, beware the password is not encrypted. The connection from the hotspot router to the radius server must also be secure.
http://wiki.mikrotik.com/wiki/Manual:Hotspot_Introduction