At the bottom of each post, just to the right of "Reply With Quote", there's a icon that looks like a quote symbol with a +. Click that in each post you want to reply to, then click "Reply to Thread" at the bottom of the thread. You will find that each post is quoted along with the name of the person that posted it. Edit each quote to remove unnecessary duplication and insert spaces between the quotes to write your response. My next post will be an example of this.Since all posts appear in-line, you can respond to all of them at once in a single reply. It would also help to clear up which one you're responding to if you mention the other poster's name.