To define the task assignee, select one of the process roles in the Process role property of the User task node. When a process reaches the User task, process actors with the given role will be found among all the process actors, and the task will be assigned to them.

If you want the task to be assigned to multiple users, then set Parallel or Sequential value to the Multi-instance type property of the User task node.

Set the Claim allowed property if you don’t want the task to be immediately assigned to the particular user, but to appear in the list of available tasks for the group of users. Then, one of the candidates will be able to claim the task. Task candidates are defined amongst process actors with the corresponding Process role property.