Within Webflow Designer Ui, you’re not going to be able to. As your menu is a Symbol, it’s going to be the same for all the pages.
However CSS can help you do that. By giving a class to your body element (for example “djofmedlognII”), and adding some custom code, you’ll be able to hide these su items from the desired page.
basically says: “don’t display elements with the class .djofmedlognII, but then display the element with a .hiddenmenu class when it’s under a body element with the class .djofmedlognII”