To quote one member, use the quote button. To quote multiple members, click the multi-quote button for each post you want to quote and also click the quote button on the last post as well and your reply window opens with all the posts quoted.

To multi-quote and have one quote inside another quote, follow the above steps and then cut the quote you want to place inside the other quote (cut the entire post to include the the bracket at the beginning of the post "[" and at the end of the post "]" and paste the quoted post to the right of the bracket "]" quoting the member's name