By serving as a readily available resource for organization employees, they helped clear up misunderstandings and provided guidance on topics that were not specifically addressed in written guidance.
They could not help with misunderstandings that employees had.  
mnli hypothesis: They could not help with misunderstandings that employees had.   premise: By serving as a readily available resource for organization employees, they helped clear up misunderstandings and provided guidance on topics that were not specifically addressed in written guidance.