If you're running  Jomres installation on a site using Leohtian, you will not be able to see the new property switcher because Leohtian has a custom copy of top.html in /THEME-TEMPLATE/html/com_jomres  That theme/template no longer receives updates, so you'll need to make the change manually.

To add the switcher, edit that file and make these changes. You will then see the switcher under the Jomres main menu.

github.com/WoollyinWalesIT/jomres/commit...5bead9ef62dd176c4db4

If you're using BS3, but not Leohtian then modify the file in this commit in the assets/bootstrap3/frontend directory to achieve the same result.