I’ve looked into this a bit, and using templates can definitely save a lot of time when setting up DMN decision tables. Many BPM and decision management platforms provide pre-built templates for common use cases like loan approvals or claims routing—these templates usually include basic rules, thresholds, and example outputs that you can customize.
The key to adapting them smoothly is to start by mapping your actual workflow and policies against the template structure. Identify which rules match directly, which need adjustment, and which might require entirely new rows or decision logic. Also, make sure your data sources are compatible—sometimes you need to add a simple data transformation step so the template can consume your existing data correctly.
Forums, vendor documentation, and open-source repositories are usually the best sources for ready-to-use templates. Starting from these allows you to focus on business logic rather than building the entire decision table from scratch.