Occasionally, you may have an important message or document that you need to send to everyone in your organization, and you require that everyone has read them, such as Safety Notices.
By selecting Mandatory Reading on a document you will achieve just that. . The moment you upload it, everyone will receive a prompt asking them to read the mandatory document. Afterwards, the manager will be able to see who has read the document and when.
Create different access rules for different user roles in your organization. For example, if you want everyone to be able to see the insurance documents for the aircraft, but you only want to give access to the management team to modify those documents.