Do I need to visit immigration immediately after my TM30 registration is submitted online by my landlady?

The user is asking for clarification on the TM30 registration process after their landlady registered them online. They need to know if they must visit immigration within 24 hours as stated by the landlady to obtain the TM30 receipt of notification, or if the online registration alone is sufficient. They also inquire if they can collect the receipt when they go to extend their visa exemption.