Miles, the reference is to a discontinued tutorial that used to be included on the old gintsoftware.com Web site. This content is now offered only through the Bentley Institute (LEARN Services) course, gINT v8i Design (Imperial).
The dataset and manual for the BI course offer both a step-by-step description of the report design process (in the Advanced Log Report Design module Test Pit Log: Using Photo Fields and Multiple‐Page Setup), but also provide the opportunity to easily merge the expressions and report directly into your own gINT Library.
If you have a LEARN Subscription, you can register for the OnDemand class, and use the course material as a self-paced training tool. If not, you can enroll in a Virtual Classroom for online, instructor-led training, and the manual and dataset will be provided.
I will pass on the word about the outdated reference in gINT Help, so it can be corrected in the next product release. Thanks!