How to set up 301, 404 and 410 redirects correctly?

Question

URL Handling

Tell me, please,
Knowingly incorrect addresses are checked, as well as page addresses in a different case. The response to erroneous addresses should be 404 or 410. From addresses in the wrong case, there should be 301 redirects to addresses in the correct case.
What needs to be done to get rid of this? What code to enter and in what file?