This short step-by-step guide will help you to use Custom fields easily.
Open the “SLA Time and Report” add-on.
1. Create
1.1. Click the “Configuration” button at the top right corner.
...
1.2. Then click the toggle button to enable custom fields.
...
1.3. After activating the toggle, you’ll get a modal window with a request to create Custom fields for mapping.
You need to create them in your Project settings:
...