If you are interested in building or modifying Lansweeper reports in your Lansweeper On-Prem installation, we recommend:
Using AI to help you build queries. AI will work with either SQL reports (On-prem Report Builder) or GraphQL/MongoDB reports (Cloud Report Builder). More info can be found in this link: Utilizing Lansweeper Documentation With AI - Lansweeper
Reviewing some SQL tutorials, as the Lansweeper report builder (for Lansweeper on-prem) is a standard SQL editor. If you know SQL, you know how to build Lansweeper reports as well.A quick online search will lead you to dozens of SQL tutorials, but this seems like a good tutorial:https://www.w3schools.com/sql/