You have an Apex Classic or older Apex model, which does not support the full list of features from within Apex Fusion. Only the newest model Apex 2016 and Apex-EL has all the configuration features available from within Apex Fusion. In order to change Feed Cycle settings, Network settings, Clock settings, Module settings, and many other items on the older Apex models, you need to access those functions from the Apex Classic dashboard rather than through the cloud-hosted Fusion site or app.
Here you can see the limitations of the older Apex model menu options in Fusion:
To access the Apex Classic dashboard, see this FAQ:
With access to Apex Fusion being very easy, new users or old users, may not know how or forget how to access their classic web interface. What is the Classic Dashboard? It is a version of your Neptune Systems Control ...
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