Hello,
To reposition the Menus, find this code: data-y="['top','top','top','top']" data-voffset="['170','170','170','170']" and change the data-voffset Values according to your needs.
For the Documentations, you can check it here: https://www.themepunch.com/revsliderjquery-doc/slider-revolution-jquery-5-x-documentation/ .
You can contact the Plugin Authors directly here: https://codecanyon.net/item/slider-revolution-responsive-jquery-plugin/2580848/comments . But since the Plugin has been bundled with Canvas, you cannot get direct support from them and must purchase a License directly from them to get support. For any other Support related to Canvas, we are always here to help.
Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.