A written communication from Head Office to it's branches is called

a memo or memorandum.

A written communication from Head Office to its branches is commonly known as a memo or memorandum.

A written communication from Head Office to its branches is commonly referred to as a memo or memorandum.

Memos are typically used when there is a need to convey important information, announce policies or procedures, provide updates on organizational matters, or request action from the branch offices. They are an effective method of disseminating information and maintaining clear communication within an organization.

To write a memo, follow these steps:

1. Start with a clear and concise subject line that summarizes the purpose or topic of the memo.
2. Begin with a professional salutation, such as "To All Branch Offices" or "Dear Team."
3. Provide a brief opening paragraph that introduces the main purpose of the memo.
4. Present the information in a well-organized and logical manner, using headings, bullet points, or numbered lists to enhance readability.
5. Use a professional and formal tone throughout the memo, ensuring that it is clear and easy to understand.
6. Include any necessary details, such as dates, deadlines, and action items, to ensure the recipients have all the information they need.
7. Conclude the memo with a clear closing paragraph that summarizes the key points and specifies any required actions.
8. Sign off with your name, job title, and contact information.
9. Proofread the memo for any errors in grammar, spelling, or punctuation before sending it out.

By following these steps, you can effectively write a memo that communicates important information from Head Office to its branches.