Hi Sandy - (I think!) from the front page of your chosen "Topic" - eg, "Quizzes & Puzzles", "Music", etc - place the cursor into the "Title" box. This should open the "Details" box for your Q.
Fill in both boxes - eg, in "Title", "Sunday Express Mag" & in "Details", eg, "18d The organ of taste in vertebrates (6)" (with any letters you've placed, so that people without the puzzle might also help you more easily, thus - T?N??E)
A bit wordy, but HTH!
PS - you can reply to your own thread once it's been started - good luck! :-)