Board Thread:Support Requests - Getting Technical/@comment-32450965-20180617091303/@comment-9605025-20180623213609

How many pages would use this alternate name? If it is only a few, you can consider using #switch. If only one, you can use #ifeq.

As has already been said, you can either use the portable infobox markup directly on the page or add the extra field to the template. There is no way to use the template without the extra field and yet have the extra field on that one page.