Can't see anything about different mode types in ReSpeaker Mic Array V2.0 Documentation

I am reading the documentation for the ReSpeaker Mic Array V2.0 and I can’t see any clear notes for what the three modes - wait, speak, and spin - actually do.
I’ve read through the python lib that’s included and I see they’re just calling registers over usb which is fine, but no docs really explaining what’s what there either.

I won’t receive the item for a few days, so I can’t test it yet.

This is the function of the product introduction page, you can have a look

But I can’t see anything deeply informative about these three modes. I searched the page for their meanings.