I am having a real hard time with this new format.
Hold down on the portion of the post (like when you copy and paste) and the little quote feature pops up.
Highlight the portion you want to quote. When you do a quote box will appear.
It doesn’t seem to work very well after the fact for some reason…if you post and then remember you left out a quote…that was what was good about the old system, easy editing and correction of mistakes which for me are numerous, but I almost always read for errors. Oh well, that’s progress!