FAFR - How to show only specific categories in a request template
Use case
There are scenarios where on a particular template only selected categories should be available as an option. 
Solution
Under Admin >> Incident Template >> Field and Form Rules Tab, create a rule as specified below 
Script:
$CS.removeAllOptions(["CATEGORY"]); 
$CS.addOptions("CATEGORY",["General", "Desktop Hardware", "Software"]); 
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