Assign an Issue to Multiple Users

I would like to setup a workflow wherin when an Issue state is changed, it will be automatically assigned to 5 of us.

Currently the options for the Automatic assignment are “Round Robin” and “Load Balancing” in which only 1 user is assigned to it instead of the 5 of us

featue is not yet, but you have to customize the method in your custom app according to the scenario.