Both documents are secured by medical permissions.
A 'medical record document' is coupled to an athlete profile, and can be found within the medical module on athlete level.
A 'person illness/injury document' is coupled to an injury/illness, and can be found within the document management module.
General info: user functionalities depend on the roles & permissions settings. If a certain functionality does not work within your user account, this will be because you don't have sufficient permissions for this.