Bagels are 2502 at my store. salad bar containers should have barcodes on them. And for wic you hold ctrl and hit the wic button twice.
Don't even start explaining wic on here. There is pretty much a different way it has to be done in every state, so any explanation is almost certain to be wrong unless you have verified you share the same state with OP.
Also, around here salad bar is a weighed item, so the container size doesn't matter. We just use 4470. OP, you need to find out what your store does.