1. Open Tianfu Citizen Cloud APP and select "House Purchase Registration Management" in "Real Estate Services".
2. Click "Add * * * with buyer" on the "* * with buyer information" page.
3. On the "Add * * and Buyer" page, fill in the personal information of the main buyer and * * * and the buyer according to the prompts, including name, certificate type, certificate number, mobile phone number, etc.
4. After confirming that the information filled in is correct, click "Submit" button to submit.
5. After successful submission, you need to wait for the approval of relevant departments to complete the information improvement of the main purchaser and purchaser.
It should be noted that when filling in the information of * * * and the buyer, it is necessary to ensure that the information filled in is accurate and the relationship between the main buyer and * * * and the buyer is true and legal. If you need more specific help, I suggest you consult the local real estate management department or relevant institutions.