Hi there, greetings from the Philippines :)
KRAs or Key Result Areas are sometimes called KPAs or Key Performance Areas. These are major categories or important areas of a job that have a direct impact on overall goals. They are written as results, not activities, outputs, and not inputs. For the position of HR Manager, here are some KRAs:
1. Employee Development
2. Compensation and Benefits
3. Labor Relations
For Management Trainees, you may wish to outline the different focus areas of their study, such as Human Resource Management or Financial Management, and for each one, write a specific objective of what they are expected to accomplish in that area :)
Hope you will find this useful :)
Mary Anne