What procedures do immigrants need to go through?

I don't know if you are asking about the procedures for applying for immigration or after immigration.

Suppose you determine the immigration country according to your own situation and think that you meet the immigration conditions of that country. First of all, you can download the application form and other documents from the website of the country's immigration bureau or the website of the embassy or consulate. According to the requirements on the form, you can prepare the original and photocopy of your documents, translation materials and notarized documents, including passport application and passport ID card inspection. Then send your application materials and application fee to the other immigration bureau or embassy or consulate, and the other party will send you a receipt and file number. Wait, the other party asks for supplementary materials, then wait, refuses to sign or interview, or informs you to have a physical examination, receive a visa and prepare to go abroad. After immigrants land in the other country, they apply for and go through relevant landing procedures, such as residence permit and insurance. Your question is not specific and difficult to answer.