You use Muse to create and update a website. You use Business Catalyst to host it. You must install and use Muse to publish your free sites. Though you can create and edit pages in Business Catalyst, Adobe recommends that Muse users create and edit pages in Muse. Use Business Catalyst only to host the pages. The reason is that if you edit a page in Business Catalyst, your changes are not reflected in Muse. The changes could be overwritten the next time you update the page in Muse and upload it to Business Catalyst.
Karim was crystal clear and answered my questions well. I did not understand the scope of adobe +BC and if it would solve the problems of my groups website. It will. Two days ago I had a a chance to give them the good news. I like that I can work with Adobe +BC in putting together our program and hope everyone I consult with listens as well as Karim.Erin P.