How to center radio buttons under captions

[#1]

I have set up a group of radio buttons on a questionnaire. They are all in the same exclusion group. Each radio button has a caption positioned On Top of the button. I have the caption centered, but I can't figure out how to get the radio button to center under the caption. Please help! thank you!

[#2]

Don't think you can using the caption. I suggest having no caption and using a separte Text obect as your caption. That way you can place that object any way you want