Using the Bar Charts gadget within Confluence
You can use our Bar Charts gadget within your Confluence instance. All you have to do is follow the guide provided by Atlassian: https://confluence.atlassian.com/doc/registering-external-gadgets-204050482.html
The application link must use “OAuth (Impersonation)”.
Configure an application link between your Confluence instance and your Jira instance: https://confluence.atlassian.com/doc/linking-to-another-application-360677690.html
Add the Bar Charts gadget as an external gadget in Confluence.
Once configured, you will be able to add a Bar Charts gadget as a macro on any Confluence page.
The final result will look as follows: