There are several Confluence-related features in the HelpDesk app:
To use them you should prepare you Jira & Confluence in advance:
1. Connect your Jira & Confluence. Read the Confluence and Jira article (Atlassian). The OAuth (impersonation) authentication (Applications → Application links → [Edit link]) should be sat up:
Confluence must be enabled to run in an iframe. Troubleshooting: Confluence page does not display in an iframe.
2. Install Support for HelpDesk to Confluence integration app to your Confluence: