I prepared this memo which to b distributed to my colleagues.Are there any grammatical mistakes.If so, kindly highlight the mistakes. TQ.

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A. As additional information, I have also prepared a set of the office rules
regulations for our staff to comply with.
Should there be any typing errors, please let me know.
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B. Kindly be informed that any staff member who wishes to apply for an annual leve, he or she is required to submit an application three days in advance. The form should be forwarded to his/her respective head of department. Thank you.