Hi @kishore_polsani ,
Required results fields can be added in the presentation layer ( Design--> Templates) i.e tmpl extension as follows:
<results>
<result-set>
<name><![CDATA[default]]></name>
<guided-results gsname="default">
<result>
<field name="category"><![CDATA[<guided-result-field gsname="category"/>]]></field>
</result>
</guided-results>
</result-set>
</results>
Make field name is mapped to value of that in the index connector. After this, do indexing once.
Index →Full Index →Staged Index →Run Full Index and preview the results.