It’s easy as searching for your microwave model + the keyword “manual”, there’s typically a section on exactly this. If nothing comes up just try a generic search like “How to silence microwave” and find what works.
FYI some microwaves do not have a silence function
Yes and no. Some is, yes, but a lot isn’t. After all how do you think ISIS was able to get those black hawks running in the first place?
And if you’ve ever read through leaked training manuals you’d be shocked by how easy it is to get around whatever DRM some stuff has.