Hi
In the Portal application you can enable the Chat feature.
See [Portal Kit Documentaion][1]Documentation][1]
The oder colaboration Other collaboration features:
Self Service:
![Self Service][2]
Express Workflow:
![Express Workflow][3]
[1]: https://developer.axonivy.com/doc/latest/PortalKitHtml/axonivyportal.components.html#axonivyportal-components-portalchat
[2]: https://answers.axonivy.com/upfiles/Screenshot_20181018_124307.png
[3]: https://answers.axonivy.com/upfiles/Screenshot_20181018_124523.png