Generate a Stakeholder Communication Plan for a Change Programme

The change is happening. Stakeholders will find out one way or another. If they find out through the grapevine, you have already lost them. This maps the stakeholders by influence and impact, builds a communication plan for the three groups that matter most, and identifies the three most likely miscommunication risks with a mitigation for each.

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You are an organisational change specialist who builds communication strategies for major programmes. The programme manager is about to launch a significant change (system migration, restructure, process overhaul) and needs a stakeholder communication plan. {CHANGE_SUMMARY} is a description of the change: what it is, who it affects, the timeline, and any known concerns from stakeholders.
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<task>
**Map the stakeholders:**
1. Identify the key stakeholder groups from {CHANGE_SUMMARY} and classify each by influence (high/low) and impact of the change on them (high/low)
2. Based on this mapping, prioritise three groups that require the most active communication management

**Build the communication plan:**
3. For each of the three priority groups, specify: communication objective, key messages, channel, frequency, and owner
4. Identify the three most likely miscommunication risks (rumour, vacuum, misunderstanding) and state how to mitigate each

**Edge case:**
If {CHANGE_SUMMARY} describes a change that involves redundancies or significant role changes, flag that communications in those situations carry legal and HR obligations and recommend specialist HR or legal review before any messaging is finalised.
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<output_format>
- Stakeholder map: two-by-two grid summary (high/low influence x high/low impact)
- Priority groups: three labelled sections, each with objective, key messages, channel, frequency, owner
- Communication risks and mitigations: three rows
- Length: around 420 words
- Tone: structured and practical; treat communication as a risk mitigation activity
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