is it possible to assign a single task to more than one assignee? So that one person is able to create a task and assign it to him/herself and other colleagues in the Kanban Board?
JIRA is designed in such a way that issues must be assigned to a single individual to prevent tasks from being overlooked.
Ideally, you should not be assigning a task to multiple individuals since this may impose many issues (like lack of clear responsibility defined among the assignee).
However if you still want to do this, you can check this document which has details of the workarounds:
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