I am trying to add a custom checkbox selection attribute for a custom workitem.

For example, a color selection with 3 choices and user can select zero to many colors.

Color: [] Greeg
[] Yellow
[] Red

(Note that "[]" meant for displaying a checkbox)

To do this, I created a enumeration called "my.enum.color" with Green, Yellow and Red options in process configuration. Then, created a my custom type in "Type and Attributes" called "my.workitemType.myType: My Type" and added the "my.enum.color" as a custom attribute. Then, created a custom editor presentation called "my.workitem.myWorkitem" and added an Overview section and tried to add my Color checkbox selection into the overview page with "Color (Checkbox Multi-Select List) using Add Presentation button.

When I did this and test it, all I see is (checked by default and can not be unchecked):

Color: my.enum.color.literal.l]

My attempt might have been totally wrong from the start. I can not find any good documentation at jazz.net to tell me how to use "Checkbox Multi-Select List" (already read Work Item Customization).

Can someone explain how to create a multiselect checkbox step by step please. Thanks!