Yes, solving previous years' papers of UPSC Management optional subject can help in improving your understanding of human resource management concepts. Here's how:

1. Familiarity with Exam Pattern:
- Solving previous years' papers gives you an idea about the exam pattern, question types, and the level of difficulty. This helps you to prepare strategically and allocate your time accordingly.

2. Understanding Question Trends:
- By solving previous years' papers, you can identify the recurring topics and question trends in the human resource management section. This allows you to focus on key areas and allocate your preparation time effectively.

3. Application of Concepts:
- Previous years' papers contain a wide range of questions that require the application of human resource management concepts to real-life scenarios. By solving these questions, you can develop a better understanding of how these concepts are applied in practical situations.

4. Identifying Knowledge Gaps:
- Solving previous years' papers helps you identify areas where you lack knowledge or understanding. This allows you to prioritize your study material and focus on improving your understanding of specific concepts or topics.

5. Time Management:
- Solving previous years' papers helps you practice time management skills and enhances your speed and accuracy in answering questions. This is crucial in a time-constrained exam like UPSC.

6. Improving Answer Writing Skills:
- By solving previous years' papers, you can practice writing concise and well-structured answers. This helps you develop effective answer writing skills, which are essential for scoring well in the UPSC exam.

7. Boosting Confidence:
- Solving previous years' papers gives you a sense of familiarity with the exam format and questions. This boosts your confidence level and helps you perform better on the actual exam day.

In summary, solving previous years' papers of UPSC Management optional subject can significantly improve your understanding of human resource management concepts. It helps you become familiar with the exam pattern, identify question trends, apply concepts to real-life scenarios, identify knowledge gaps, improve time management and answer writing skills, and boost your confidence for the UPSC exam.