Setup openfire with TLS 1.2 support

Hi, I’m newbie here.

http://download.igniterealtime.org/openfire/docs/latest/documentation/ssl-guide.html

A quick question: Shall I follow the same steps (mentioned in above link) for configuring OpenFire server for supporting TLS 1.2 only?

This is a general guide with no distinction between TLS versions. You can switch off other versions in Admin Console > Server Settings > Client Connections - press Advanced configuration near the 5222 port, scroll down and uncheck TLS 1 and 1.1. Save and maybe restart the server. You can also disable specific ciphers on that page.