Create a new STAGIL Traffic Lights Custom Field
Select ⚙️ → Issues.
Under FIELDS, select Custom fields.
Click Create custom field. Make sure to select All to filter down the STAGIL field.
Find the Traffic Lights fields, select the type you want to create and click Next.
Add Name for your field → Create.
Add the new custom field to one or multiple screens by ticking the corresponding box and clicking Update.