Sitebuilder Plus vs Websitebuilder

I've noticed on help that it mixes Sitebuilder Plus instructions with Websitebuilder. Isn't there a way that these two can be separated? I am trying to place a calendar on a Websitebuilder site that hasn't gone live yet (moving domain name), but I see nothing when I insert Google Calendar URL for that page. I've also noticed this in several other areas. Maybe it's because I'm used to it, but Sitebuilder Plus was/is a much easier program to understand and learn.