Need to create a specific workOrder when Maintaince Plan is created

I need help with some stuff, I need to create suppose 5 workOrder when the Maintain Plan is created via APEX ?

When i access it’s field’s via apex it give me error.

I have the Field Level Access (Confirmed).

/Standard Solution/

I know Salesforce provide you functionality to create records via Auto/Manual Where can i configure based on input that on Maintain plan that this much work order’s need to generated