The workflow is like this:
Open the Organizer > Save the Project Map as a View Map > Open the View Map (double clicking) > Select the correct settings for the View Map (Scale, Dimensions, MVO, GO, Pen, Layer Combo, etc) > Right click the View Map on the Organizer and select "Redefine with current view settigs" > Place your View Map on a Layout.
If you need to make any change in the View Map settings(Scale, Dimensions, MVO, GO, Pen, Layer Combo, etc) :
Get back to the Organizer > Select the View Map > Do the changes > Right click the View Map on the Organizer and select "Redefine with current view settigs"
Then, all the Layouts with this View Map will be updated.
I would recommend you to always work with View Maps, as they have the settings saved. Project Maps don't.
Hope this helps.