Procurement Regulations and Procedures

Hi all, Starting a new assignment wherein 1st objective is to review & update: a) Procurement Regulations, b) Procurement Procedures of the organisation (2 separate docs - "Regulation" document is at higher level & "Procedures" go more into details of the Regulations). Basically aiming to reduce the bureaucracy/frustration by improving the procurement process but also ensure some checks & controls given the org is mostly funded by donors (e.g. governments) with regular audits in place. In addition, how to do we best communicate & “sell” the benefits of proposed changes? How would you approach this if you were me (given tight deadlines)?