Hi, welcome to the site. There is some information on
page 82 of this EYE handbook , search inside the amazon preview for 'allegation' .
Page 120+ of the CYPW is also good reading. Search the preview for 'policies and procedures to protect' and click the link to page 118.
Policies and procedures are built on law, national guidelines, recommendations and best practices which help to protect team members by laying out what is expected of them eg. how to interact with others, what to do and how to react and behave, the role and responsibilities of individuals so everyone knows who has responsibility for different situations which enables you to report information to the appropriate person.
The revised
Guidance for safer working practice for adults who work with children and young people and
Keeping Children Safe
Hth, best wishes xx