Hello,
As for the language switcher, you can create a menu and assign the switcher to the menu. As for the currency switcher, it is hardly ever inserted in the right top corner. You can add it to the right part of the site.
1. Create a sidebar for the currency switcher and add the currency widget; http://prntscr.com/pqz5xw
2. Create HTML block and insert the Widgetized sidebar element, choose the sidebar you have created; http://prntscr.com/pqz68g
3. Insert the shortcode of the HTML block into the right part of the top bar “Text in the header top bar” http://prntscr.com/pqz6nu
Best Regards