Hello everyone, 

We have 2 fields in a collections. First Name and Last Name. I have a checkbox field outside the collection.

The requirements are that when one fills the first name and last name, the first item in the checkbox shows both the first name and last name. When the user click on add and fill another first name and last name field, another item in the check box appear showing the first name and last name. It should look like the screenshot below.

Please advise,

Best regards.