Sidebar Widgets

1. Some widget areas are also dependent on the page template/layout used in order to show, found under Page Attributes when editing a page.

2. We’ll need a link to your site to see the issue live please.

3. Under Appearance > Menus you can create custom menus and then under Appearance > Widgets assign those menus to a Custom Menu widget. Furthermore, you might benefit from a plugin like:

http://wordpress.org/plugins/dynamic-widgets/

1. Because for example, there’s the left sidebar widget area. It wouldn’t make sense for it to appear any other time unless you specifically chose the left sidebar layout for a page. This is a logistics thing. Is it fair to assume you’re relatively new to WordPress? If so, please understand that this is how all themes handle such features and may make more sense the more time you spend with it.

2. Use:

#pages-2 {
  -moz-column-count: 4;
  -webkit-column-count: 4;
  column-count: 4;
  width: 100%;
}

https://startupwp.com/topic/customizing-your-theme/

Please see the link shared above:

https://startupwp.com/topic/customizing-your-theme/

Basically, you can just copy and paste into your theme options.