Bricks comes with a built-in sidebar generator. Located in your WordPress dashboard under Bricks > Sidebars it allows you to create unlimited sidebars (widgetized areas).
All you need to do is give your sidebar a name and description (optional), then click Create new sidebar.
Once your custom sidebar is created go to Appearance > Widgets and drag and drop the widgets of your choice into your newly created sidebar.
You can now add this sidebar to any Bricks-powered page or template by dragging the Sidebar element onto the canvas.