Remove the explorer menu item if users shouldnt see it

opentech/apply/home/wagtail_hooks.py

 from wagtail.core import hooks
 
+from opentech.apply.users.groups import STAFF_GROUP_NAME
+
 from .models import ApplyHomePage
 
 
@@ -7,6 +9,15 @@ from .models import ApplyHomePage
 def exclude_fund_pages(parent_page, pages, request):
     # Don't allow editors to access the Apply pages in the explorer unless they know whats up
     if not request.user.is_superuser:
-        pages = pages.not_ancestor_of(ApplyHomePage.objects.first(), inclusive=True)
+        pages = pages.not_descendant_of(ApplyHomePage.objects.first(), inclusive=True)
 
     return pages
+
+
+@hooks.register('construct_main_menu')
+def hide_explorer_menu_item_from_frank(request, menu_items):
+    if not request.user.is_superuser:
+        groups = list(request.user.groups.all())
+        # If the user is only in the staff group they should never see the explorer menu item
+        if len(groups) == 1 and groups[0].name == STAFF_GROUP_NAME:
+            menu_items[:] = [item for item in menu_items if item.name != 'explorer']