Hmm... Please ask them if they're using a 3rd party app for that.

I can send to a group, but when they respond they are individual responses. I want them to respond on group text. They say when I send a group text they're not coming to them that way, more than 1 person gets the message, but doesn't view like a group message. How can they be as a group message where they get it, it is a group and responded on same text?

Simply make a group in your contacts to easily send a group of people a message. Or you mean something else?