When a person in a position of authority must make a decision that may harm others, they should be guided by several key principles:

1. **Ethical Considerations**: They should prioritize ethical decision-making frameworks, such as utilitarianism (maximizing overall well-being) or deontological ethics (following rules and duties), depending on the context. They should also consider the potential for harm and weigh it against the benefits of the decision.

2. **Duty of Care**: Their responsibility to protect the welfare of others should be central. This includes considering both immediate and long-term impacts on individuals or groups who may be harmed.

3. **Transparency and Accountability**: Open communication about the decision-making process is vital. Those affected should be informed of the rationale behind decisions, and the decision-makers should be held accountable for their choices.

4. **Minimizing Harm**: Efforts should be made to reduce the extent of harm, even if the decision leads to some adverse effects. This could involve finding compromises or alternatives that mitigate negative outcomes.

5. **Legal and Institutional Guidelines**: Any decision should be in accordance with laws, regulations, or guidelines that provide a framework for responsible decision-making.

6. **Consultation and Collaboration**: If possible, decision-makers should consult with relevant stakeholders, experts, or those affected by the decision to ensure they understand the broader context and impact.

Ultimately, the goal should be to make decisions that balance competing interests in a way that minimizes harm while fulfilling responsibilities and obligations to all parties involved.