You would typically do this with a TaskSwitch. **TaskSwitch**. We have a good demonstration of it in the demos that are shipped with the Axon.ivy Designer.
See 'File' > 'Import' > 'Axon.ivy' > 'Ivy Sample Project' => Pick `Workflow Demos` and visit `Processes/Humantask/ProcurrementRequestParallel`
![alt text][1]
[1]: https://answers.axonivy.com/upfiles/splitHumanTask_wfDemos.png