This theme incorporates an unlimited sidebar feature. This means that you can make as many sidebars as you want, apply different widgets to them, and use them on any specific pages you want!
In the global theme settings you’ll be able to specify your sidebars and on what side you’d like them to appear:
Next you can fill those sidebars with widgets in the Widgets tab:
When the sidebars are filled, select them on any page you want. You can change the global sidebar position for a specific page if you like to move things around a bit. If you don’t want a sidebar at all, just disable it!