Go into the menu Tools and open the Ebs Editor. Then, open the Ebs Prefab Editor. Drag and drop your prefab into your scene. Named your Ebs Prefab, be careful not have the same name as another prefab. Add your prefab of your scene in the field Prefab Build. Then, select the default preview material. Add the type is the conditions of your Ebs Prefab. Checked the field Use Prefab Terrain, if you want that the Ebs Prefab work a terrain. The same thing for the field Use Prefab Detection, if you want that the Ebs Prefab use the surface detection. Then, you can create and save your Ebs Prefab. You can modify your parameters of your Ebs Prefab in inspector. then apply is remove it of the scene. Select your Ebs Collection is add your Ebs Prefab. Now your Ebs Prefab is ready to use.