Hi,
I think you should focus on the basics and importance of each HR process, i.e.:
1. Recruitment - Importance of Job Description and Specification documents
2. Interview Rating and Competency-Based Interviewing
3. Salary Breakdown and Benefits Policy
4. Difference between Performance Appraisal and Performance Management
5. Difference between HR and Admin/Facility Management
6. Role of HR as culture builders rather than operations/clerical activities
7. Leadership pipeline/development
8. Career Planning
9. Some metrics to show HR efforts being measured - interview to offer to joining ratio, Compensation and Benefits benchmarking exercise, Training and Development metrics, appraisal parameters, etc.
Cheers,
K