To add a Custom Field on the Case Card, head over to the Details-view.
Click the Add Field... button.
The following drop-down dialog will appear, click on it.
The existing Custom Fields in the system will appear, select the Custom Field you want from the list.
After selecting the Custom Field and filling in the information, click the Create button, and you are done.
1. Ensure that you are either a Case Manager, a Client Manager, a User with 'Assistant'-role, or a User with 'Administrator'-rights set up to be able to make changes.