How do I change my view of a specific topic to see the whole thread instead of just one message?

[wbc]

Hello,

Brand new to the community.

Every time I look at my question, I'm only seeing a single post.  Interestingly, one time I entered I saw the whole thread at once, but I don't know what I did that was different, and I can't find that again.

Is there some setting or link I'm not seeing to see the whole thread rather than a single post at a time?

Thanks so much.

Best Regards,

Alan