1) I would like to find out how do you configure the footer into 3 columns as shown in the Live Preview? I tried inserting different widgets on Footer Widget Area 1 to 6 but it seems that it’s all placed at the corner left of the footer.
1) You can set the number of columns in the Footer tab of the options panel. Pls check for the Footer Columns setting at the very top of this tab.
2) The theme comes with multiple sidebars or widget areas to help you have different sidebars for pages/posts/blogs etc. But the footer itself, sorry, there is no option right now to change it based on the post/page being viewed. Once configured, it takes effect across the whole site.