@Jay ****
You don't apply for anything through immigration. Visas are handled through embassies, not immigration. You must travel to a country where you want to apply. Then you apply through that embassy on the e-visa website
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which is the ONLY way to apply for a visa now. That application will ask you where you physically are, and will ask for proof that you are there and may be further confirmed by the embassy.
As I said, each embassy sets their own requirements. Some want 3 months of statements, some want 6 months of statements. Some only want the last statement to show required funds, some want every statement to show it.