Learn Polish: Nie wolno teraz jeść. - Eating is not allowed now.

The word wolno is an impersonal expression, meaning it doesn't need a subject like "I," "you," or "it." By saying nie wolno, you are just saying generally "it is not allowed" or "one must not."

Does wolno change depending on who isn't allowed to eat?

No, wolno stays exactly the same! If you want to specify who isn't allowed, you can add a person (for example, "to me" or "to you"), but on its own, it just applies generally to everyone.

Why do we use the dictionary form jeść (to eat) here?

After words that express general permission or obligation (like wolno - allowed, można - possible/allowed, or trzeba - necessary), the main action verb is always in the infinitive (dictionary) form. So, "not allowed to eat" is simply nie wolno jeść.

Can I put teraz at the end of the sentence?

Yes, Nie wolno jeść teraz is also perfectly fine. Polish word order is quite flexible. Putting teraz in the middle just makes the sentence flow very naturally, emphasizing that eating isn't allowed right now.