To generate an Epic Dependency Report using VisualScript, you'll need VisualScript installed on your Jira instance.
Once VisualScript is added to your instance, you can add a VisualScript gadget to your dashboard.
When the VisualScript gadget is added to a dashboard, you'll see a list of available reports to run.
The built-in reports will be in a folder called "Built-In Reports".
Choose "Jira Epic Dependency" to add to your dashboard.
You'll be asked to provide an issue key for the Epic you want to center this report around and the type of dependencies or links you want the report to focus on, for example, Blocks, Duplicates, Relates, Clones. By default, "Blocks" will be selected.
The report will show all the issues linked to the selected Epic in the center row. The bottom row will show the issues that are blocking, while the top row will show the issues being blocked. There are colored dots in each issue which represent their status: to do is blue, in progress is yellow, and done is green.