Thank you! Right, this should've been something I explain in the module itself haha. Their meant to represent progress towards a goal, in this case clearing the obstacle to proceed forward. They're not meant to be overly complicated and use degrees of success to fill segments. PCs are free to use whatever narrative method they choose to overcome the obstacles, using applicable skill triggers. On a 9 or lower, they don't fill any segments and take a consequence. On a 10-19, they fill one segment but still take a consequence. And on a 20+ they fill two segmentsand don't take any consequences. Hopefully this helps!