Hey Nikki thanks for posting your question on Community.
I have found some details on the HMRC's website on the link here which should be able to help with completing the CIS and Apprenticeships section of the EPS. From what I have seen from the link if you do not contribute to any of these value would be 0 if you are unsure we would suggest speaking the HMRC.
Please let us know if this helps with your question.