Although it is grayed out the Filter by: dropdown displays the object currently being used to filter for the list of available objects in the left hand column of the Select Point dialog. The filter is controlled by the object selected in the View From Position list in the View From/To dialog.
The Create New Point button 
opens the Add Geometry Component dialog which allows you to create a point to apply to the selected object.
The right hand column displays a list of points whose parent is the object selected in the View From/To panel. Select a point and click OK.
Select the Show Component Tooltips check box to activate enhanced tooltips that provide information on components as they are hovered over using the mouse.