The location of containers on your page are defined by the page display template. Refer to the Managing Templates chapter.
The {container} template plug-in is used to create containers. There are two
arguments that can be passed to this plug-in: name (required) and
global (optional).
For example, the template code used to add the global container for navigation was as follows.
Example 13.1. Adding a global container to a template
{container name='primary navigation' global=true}
If you want to create a local container, you can omit the global parameter (or
set its value to false.