Navman Tracker 5607.

When I go through the Navmans menu as below there is no difference between the “Show all” & “Selected” views on the chart window, all my waypoints are shown.

Setup – Chart – Other – Waypoints – (Hide all, Show all, Selected)

If I select “Hide all” they all are hidden as you would expect. I would have however that if I setup the Navman as below,
Setup – Chart – Other – Waypoints – Selected.
then only the waypoint I select through the
Menu – Waypoints – (highlight the waypoint) – Menu – Display
would be shown on the chart ??????
What am I doing wrong !!!!!