This thread has a description of all the boards on Elliquiy.
For stories, it is usually better to be safe than sorry. One point to make is that the Staff can move any thread at any time, so if you think it is in the wrong board, they can quickly put it in the appropriate forum.
If it will only be light and fluffy, then put it in the Light section.
If it is light with some scenes of Bondage, then put it in the Bondage section.
If it is a light story with a kidnapping scene, then it belongs in the Non-Consensual section.
Always better to side with the lower forum...