off canvas

Hello,
we are a primary school from the Czech Republic and we have purchased a "Group" template. I needed to deal with the "off canvas" mobile menu. Currently, I see the whole menu completely, meaning the main menu and submenu all at once. But we would like to see only the main menu items and the submenu worked as a popup, as it is in Demo Demo

Home / Features / UiKit / Typography - off-canvas - Parent

Can you please advise me if I have to modify an offer or module or make another adjustment?
Thank you
O. Pytlík

new.zs-brezinova.cz

Hi there,
I was visiting your site and couldnt see any flaws.
And the offcanvas menu on the demo is on the left too, same like on your site.
Sorry, dont know what do you mean

Thank you for your answer, sorry for my English... google translator; -) I mean, how to set the menu for mobile devices to submenu opened down, as shown in figure 1 and 2. In order to the scroll.
1; 2 - how would I (Sub item)
3 - this is my present status (all menu items are shown)