Slow Cooker fans - what exactly is the "atuo" function for?

[Gillian76]

I am cooking a casserole for dinner tonight. Just put it on and want to eat around 5.30/6.00. Should I put it on high, or can I use auto?

Not quite sure what the difference is

With mine, Auto puts it on high for an hour then goes low For tonight depends what your cooking - if your cooking now high for beef, auto for chicken.

'Tis beef. Should stick with high then.