In Massive Dynamic, almost everything happens in Jenga Builder (except adding new posts, pages, portfolios, and those kinds of stuff).
You can create a whole page by using Massive Dynamic Builder, Jenga.
So you don't have to move around WordPress and choose different options in different places. To access Massive Builder, you can go to the WordPress dashboard and click on the “Start Now” button to start creating a HomePage or change the layout of it.
For accessing the builder on other pages there are two ways:
1. After login to the WordPress dashboard, open the page which you want and click on the "Edit Content" button at the top of the page.
2. login to the WordPress dashboard.
Navigate to the pages >> all pages
Hover on the name of the page which you want to edit it to see the "Edit with Massive Builder" option.
Press it to navigate to the builder panel.
Here you can see the builder environment: