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There is no need to restart any services prior to testing the web portals (however if the portal was open whilst the changes were being implemented then you will need to refresh the web page in order to view the changes). Provided the customisations were enabled and saved you can now see the effect of the customisations by simply opening the affected portal and examining the areas changed.
As can be seen in the example below a link has now been added in the middle of the footer that will take us to the self service console;
