I installed windows server 2016 for a small company, so I don't need to have domain controller on this installation and for RDS I only need RD Licensing and RD Session Host roles. But only with that roles theres is no Remote Desktop Gateway which is used in many tutorials to install SSL certificate on terminal server (like here: https://ryanmangansitblog.com/2013/03/27/deploying-remote-desktop-gateway-rds-2012/).
So to conclude, I just don't have interface of Remote Desktop Gateway to install SSL certificate.
Is there any workaround to deal with it and install SSL cert on my RDS?