Board Thread:Support Requests - Getting Started/@comment-33205097-20170928224833/@comment-32354545-20170929022542

It looks like the page in question is c:chronicon:Template:Infobox_Class.

To fill out the infobox in source mode, it is as easy as:

copying this syntax (which is available on the template page) and filling it out. I have not learned the obfuscated ways by which Visual Editor accounts for this or other templates, and I doubt that many other of the experienced editors on this wiki, Community Central, will have learned them, either.

Source mode is the more powerful editor. If you don't want to use source mode for too much, you might use it to add this template, and then save the page - it is always good to save a page after each major step such as an infobox addition - and then re-edit it in visual mode.