Respected __________,
This is to inform all the residents of ___________ (name of the dorm) that the front desk hours have been changed and revised as a conclusion of the meeting held on __/__/____ (date). The timings are changed from __:__ (time) to __:__ (time) and you are hereby informed to kindly reach the front desk for any help during the said hours only.
In this regard, do feel free to reach us at ______@___.__ (email address).
Regards,
[Digital Signature – if applicable]
____________ (Signature)
____________ (Name),
____________ (Contact details)