Slow cooking veg casserole question?

[confusedpixie]

I've been given a slow cooker for Christmas. I'm making a vegetable casserole in it for tonight but have no clue about how long I leave it on for? I have the veggies ready to prep so any ideas?

Hope it went well.
High am hour or two once hot
Low prob up to 6 for just veggies
Longer for meat

Thanks you :) I wasn't overly keen on it in the end, was bog standard to me, but DP loved it so it must've been okay!

I left it on high for about four hours and low for an hour, everything seemed cooked through but still with a bite so all was well with a chunk of bread! :)