How to I change the main menu not to collapse?

Hello Harvliet Dalgety !

In Protean template this menu appears by the JQuery function. So if you don't want to use another template then you need to simulate "the initial click" before the page loading. Then you need to add the following code to Studio->Designer->Injection->Head area:

<script>

$(document).ready(function () {

        bx_menu_slide_inline('#bx-sliding-menu-sys_site', $('#bx-menu-toolbar-item-main-menu a').first(), 'site');

    });

</script>

Well, it's much easy then to use Decorous or Lucid templates then, Protean has been designed for this menu.