The 90-day report of address is called TM47. What you are asking about is probably the TM30. If you search for these specific "forms", you'll find relevant information. I find this website useful https://tm30.io/tm30_vs_tm47 . One's host (hotel, landlord, etc.) is supposed to do the TM30 within 24 hours after their guests (tenant, etc.) have arrived at their place of residence. As DrJack54 said, it's not that strictly enforced.