How to enable the RTF editor in Jira

I'm new to Jira and have big problem with creating tables inside my testing plan. Using pipes, double pipes, etc. to build the table markup is really time consuming.

So, I saw here, that actually there's a RTF editor with visual table building in Confluence (which should be used in JIRA right? ) : http://confluence.atlassian.com/display/DOC/Working+with+Tables+in+the+Rich+Text+Editor

However the textareas in my Jira installation are just plain text fields and can't figure out how to turn them into the the nice RTF areas shown in the URL a开发者_如何学Pythonbove...

You have to go to Admin, Field Configurations and tell JIRA to use the Wiki Renderer for fields such as Description and Environment.