

Hi Krishna,You can't create a Radio button through Configuration in the model. If you want radio buttons, you need to customize your standard page using APEX. Here is the sample example for the radio button. Based on your requirement you can change the names.Visualforce Page:
Controller:<apex:page controller="sampleCon">
<apex:form >
<apex:selectRadio value="{!country}">
<apex:selectOptions value="{!items}"/>
</apex:selectRadio><p/>
<apex:commandButton value="Test" action="{!test}" rerender="out" status="status"/>
</apex:form>
<apex:outputPanel id="out">
<apex:actionstatus id="status" startText="testing...">
<apex:facet name="stop">
<apex:outputPanel >
<p>You have selected:</p>
<apex:outputText value="{!country}"/>
</apex:outputPanel>
</apex:facet>
</apex:actionstatus>
</apex:outputPanel>
</apex:page>
Hope this helps you!Best Regards,Jyothsnapublic class sampleCon {
String country = 'CANADA';
public PageReference test() {
return null;
}
public List<SelectOption> getItems() {
List<SelectOption> options = new List<SelectOption>();
options.add(new SelectOption('US','US'));
options.add(new SelectOption('CANADA','Canada'));
options.add(new SelectOption('MEXICO','Mexico')); return options;
}
public String getCountry() {
return country;
}
public void setCountry(String country) { this.country = country; }
}