Hi Theerapun
Sorry for the delay.
You must create your own preset. The Meditation (deep) on my version of BWGEN ver. 3.1.3 only goes down to 4Hz, with a pitch which does not reach 100Hz. Make one line from 13Hz(Lowest Normal Wakefulness) to 1.5Hz in 20 minutes. Set the pitch to 100Hz.
When you are creating the wave file make it 45 minutes long. This will make it so that you are entrained at 1.5Hz for 25 minutes.
After reviewing brain wave frequencies it does seem odd that delta sessions could help with Lucid Dreaming, but it did for me. Memory Supercharger is known to put a person in deep alpha-theta brainwave entrainment, so maybe, it's possible that doing sessions with BWGEN at 6Hz(long term memory stimulation-from MegaBrain and Mid-High Theta) for 25 minutes could help. Experiment.
If you get bored during sessions, you may want to try the following. I think it's a good idea to buy an audible affirmation tape of your choice, that has music to enhance it. Jonathan Parker has made many audible affirmation tapes with subliminals embedded. His audible tapes are called MindTalk and InnerScript, he has others too. His affirmations are well worded. His tape topics cover a very, very, very wide and excellent range. I know plain affirmations are far from effective compared to the strategies in Paraliminals, but if they take away your boredom, so what? There's nice music too behind the affirmations.
I don't suggest you listen to rock music while entrained. Rock music has far from relaxing rhythms, and could disturb the entrainment.
Another trick to help with lucid dreams is to leave your light on during the night, while you're asleep. This will keep you on the surface. If you can leave your radio on softly, between stations, this should also create a slight lift into alpha.
Good Luck Theerapun.