Offcanvas closing automatically for Onepager websites

Hello guys,

Is there a possibility to use the offcanvas menu in the Helix template for Onepage sites (example: click on menu and menu is closing automatically, scroll to anchor div, should also provide l use with mixed links). Today, more and more pages are only made with an off-canvas menu, including one-pagers.

Here is an example for a page under construction: http://vier.tanzatelier-langguth.de/

Thanks in advance.