Reports & Parts Database Manager

Good Day

We have been using Bentley Substation for a month now and after successfully completing the training with Bentley we are struggling to setup customized reports in Bentley. Is there a detailed user guide available for Custom Reports and the Parts Database Manager?

Currently, our Reports are generating blank screens and on some users pcs it correctly generated the report on the first try but thereafter keeps generating the same report over and over again.

Any guidance would be welcomed.