I know title is more than vague, but did not even know if this is the right place to post.

1. I need help how to consolidate replies to multiple quotes. Right now I click on "quote" and that single post pops up for reply. A lot of other posters are able to respond to 2,3 or even more posts and they show up in their separate frames but in one reply. How do I do that? If I wasn't clear explaining it, ask for details please.

2. Why do letters that I type specifically in capital mode, like "LAX" show up in lowercase mode "lax" in my post?