In general, Waiting For actions are ones that aren’t for you to do, but still need to be aware of. For example, you may be waiting for someone else’s reply, or for some additional information.
Waiting Fors are a great use case for 🏷️ Contexts and due dates.
For example, you’re waiting on a report from John who said it’d be done at the end of the month.
You can create/assign the context for “John” and set a due date reminding yourself to follow up with him at the right time.