"Leona Laurie" wrote:
1. Now that the new nav is installed, how do I make the old nav disappear?
You need to delete the corresponding code for that menu from your theme. It is impossible to provide instructions on how to do this as all themes are different.
"Leona Laurie" wrote:
2. How do I add the child pages to the nav? I only have one page with child pages, and I’m not seeing how to get them to appear as a drop-down under it. (Mainstage)
Set the page to have a ‘Page parent’. This is not controlled by the Multi-level Navigation plugin but by WordPress itself. You can modify the page parent when you edit/create a page. I think it is an option on the right hand side (I could be wrong though – I rarely use that function).