...
Navigate to Dashboard Hub from the top Jira menu for Jira Server/Data Center and from the Apps menu for Jira Cloud.
To add a datasource, access the dashboard actions in the “…” menu, in the top right navigation bar. Select Add datasource so that any available source products can be selected.
Select the required product and proceed to the configuration.
For Jira and Confluence Server/ DataCenter, configure through User+password or Personal access token
User+password : Provide the instance URL, username, and password that has access to the instance.
Personal access token: Provide the instance’s URL and API Token.
4. For Jira and Confluence Cloud, configure through API token or Dashboard Hub Connector app.
API Token: Provide the Instance URL and API Token of the cloud instance
Dashboard Hub Connector app: This app is a bridge to bring data from other Atlassian products, keeping users and security privileges configured on every instance. This means that users can access data from other Atlassian cloud products only if their Atlassian accounts have the right and sufficient privileges. It requires Dashboard Hub for Jira (paid app) to be installed in the main instance, but the Dashboard Hub Connector apps are free apps!
External Jira instances Install the free app Dashboard Hub Connector for Jira - Reports & Charts. There is no need to install a connector to display information from the current Jira instance, but only if one wants to retrieve information from an external Jira instance.
Confluence Install the free app Dashboard Hub Connector for Bitbucket - Reports & Charts.
...