Additionally, Osmosis offers the Anchor Menu per page option. Notice that, anchor menus are optimal for navigation within one page.
To create such a menu in a page please do as follows.

1. Add Section IDs (e.g., idname1) in Rows you want to use in your menu.
2. Create a menu with the usual way (Appearance > Menus).
3. Add as menu items custom links of the form: http://www.site.com/pagename/#idname1
4. Save menu and use it by selecting it from the Page Options of the page (Anchor Navigation Menu or Main Navigation Menu).

In the exact same way you can create one such menu for the Header Menu as well, so that you have a One Page site.

Set the Home Button in One Page version

You can set a home button (with the behaviour of the back to top button) by creating a custom link with the following URL: #grve-goto-header See the picture below.