Use shallow trays with excellent drainage, mix of roughly 3/4 potting mix 1/4 riversand, place the seed no more than 2-4mm deep. Keep tray in semi-shade (mine are under 70% shade cloth with surrounding bamboo and palm trees giving some extra shade and protection). Keep moist but not wet (every day a quick spray) the seed will germinate within a week maybe a few stragglers there after. Don't waste time and get the seed in as soon as possible because freshness is highly important for a good strike rate with Adenium. Once they have become manageable place them into small pots or large tubes.
Thanks so much for the quick reply. Will get the seeds in right away. Was wondering how long they would keep. Was going to wait until Spring time but as you say freshness is important. Once again thanks for the post.