Learn Hardcore Russian: Перед вебинаром стоит настроить микрофон. - Before the webinar, it’s worth setting up the microphone.

Time: перед вебинаром = before the webinar
Place: перед домом = in front of the house Context tells you which meaning is intended.

In this sentence стоит is not literal stands. It’s a common impersonal expression стоит + infinitive meaning it’s worth / it’s a good idea / it would be advisable to do something.
So Перед вебинаром стоит настроить микрофон ≈ Before the webinar, it’s a good idea to set up the microphone.

Who is doing the action? There’s no subject like you.

Russian often uses impersonal structures where the subject is understood from context. Here, the implied subject is usually you (in general) or one:
(Вам) стоит настроить микрофон = You should / It would be good for you to set up the microphone.
The sentence stays natural without вам because it’s general advice.

How strong is стоит настроить compared to нужно настроить or надо настроить?

стоит настроить = mild advice / recommendation (it’s a good idea).
надо / нужно настроить = stronger necessity (need to / have to).
следует настроить = more formal, guideline-like (should in a formal tone).
So стоит sounds friendly and suggestive, not strict.