Originally, the main menu was loaded automatically by scanning the content tree for pages of type '[Seiko] Main Category'. This feature has turned out to be slow and problematic.
Thus, we have introduced two new settings in the CMS:
The checkbox allows for a smooth transition to this new feature after it has been deployed. If unchecked (default) it will load the main menu in the original way.

For example:

Results in:


In order to add a top-level page, check 'Show As Top Level In Main Menu' in tab Menu Information:
