Show/hide in Navigation

There are some pages that I do not want to show in the menu bar with classic and previous versions it was easy to achieve by a selection box but that seems to have disappeared.
How is this achieved please

@graham-sm1th

do you mean this

No, Admin page for instance I need access to it but do not want it displayed in the menu as it takes up room, likewise privacy and T"s & C’s I know the latter 2 can be hid in a modal. But, it’s a nice feature to have at the tick of a box

Sorry Your are right, when I enlarged it to full screen I could see what you were doing. Thanks very much.