Is it possible to set Unassigned as a default value for a custom field of the type User Picker (single user)?

Vincent Mouwen

To stories we want to assign, besides the assignee, a support assignee. We created a custom field of the type User Picker (single user) which we called Support Assignee. This all works fine but it's not possible to set as a default value "Unassigned". We need this because if there is no value in the field it is not shown on the issue.   

Kian Stack Mumo Systems

It's true that you can't select "unassigned" as an option. One possible route you could take is to create a dummy user that will be used to represent any that do not have a value in "Support Assignee". That would cause it to be populated, but not refer to a user it shouldn't.