How Do You Announce Office Timings Without an Intranet? Seeking Advice on Best Practices

Standard Procedure for Announcing Office Timings

To streamline office timings, what is the standard procedure for announcing certain actions for employees not coming on time in the absence of an intranet? Should a circular, memo, office order, or notice be circulated to inform employees? Please help!

Thanks & Regards,
Maya

Circular, Notice, Memo, or Office Order

Dear Seniors, to streamline office timings, what is the standard procedure for announcing certain actions for employees who are not coming on time in the absence of an intranet? Should a circular, memo, office order, or notice be circulated to inform employees?

Please help!

Regards,
Yasir Hashmi