Safety stock Calculation For MRP planned items in oracle cloud

Summary:

Our scenario is that we are using supply planning and we want to calculate safety stock using Days of cover method for my MRP planned items meaning they have dependant demand.we setup our constrained supply plan using FBDI Templates and in item template i have configured fields like safety stock planning method as Days of cover.i have given Days of cover and Demand period days.
In the plan edit options i have chosen the method as user specified-values for all items.
i have also read the safety stock documents attched below but unfortunately still not able to get the answer,