Sample Paper on How to avoid stock out or ruptures

I have a quick gig for a humanitarian organization, about supply chain management. Topic: “How to avoid stock out or ruptures” the idea is to write a Standard Operating Procedures (SOP) on how to avoid stock out. good narrative layout and possibly flow chart to make it looks nice and visual. it is like you have a supply team and you want to want an SOP for them to follow and learn how to avoid ruptures and stock outs.