How to populate value to another field base on selection?

We require the full name as the first field. IF the respondant IS attending our event, we need the name to prepopulate into the Attendee 1 Full Name field. Is that an option? If so, how is it accomplished?

Hello,

This can be accomplished using conditions in your form, you can find a guide here: http://www.jotform.com/help/286-How-to-Populate-Field-with-a-Value-from-another-Field

Please take a look at it and let us know if this is what you're looking for.

Thanks.

Here's how the condition should look like.

Here' my sample.

You can review the guide provided by @rehcgt. If you have questions feel free to contact us here.