Click on each individual post you want to quote and then click at the bottom of the thread. When your post reply box comes up all the quotes you clicked on will be in the box.
Bttt so others might learn this, too. Both of the above ways work. I used to think that the m-q button wasn't hooked up to anything.
That function doesn't show up on the iPhone app (at least I haven't seen it) so I quote the bottom one that I want to quote, comment, copy everything, discard post, quote the next one, comment, paste what I did before, copy everything and repeat as necessary. Posted from the TJJ App for iPhone & iPad