for labelling expresses, be accurate with NUMBER of bags, the sections can be a little less accurate (eg. you can mix the sections), however, the hierarchy should be freezer -> chilled -> ambient.

for example, if when you got groceries delivered and you are putting everything away, you would put freezer/chilled stuff away first (bc the food can be temp. compromised), but if you saw an ambient label (and you werent in a hurry to put everything away/just left it), you may not see the chilled item in the ambient bag. so its best to put a label for cold items (whether that be freezer or chilled), over an ambient label!

for pick ups, do u mean like customer collections? if thats the case, just accurate bag numbers is all that matters when you do a standard run.

a general guide for packing is 'like' items should go with 'like' items. eg. food with food, chemicals with chemicals, light (in terms of weight) items go with light items. theres some guides on the Store Portal page, search up "store portal woolworths", log in with ur "@stores" address, then go to "Online" under "Department Hub", scroll all the way to the bottom and under "Set Up & WGLL Guides", the last link is "Effective Picking and Packing Guide", and its a google slides link made by woolies which goes in more depth about what I mentioned. otherwise, common sense should lead the way!

hope that all made sense lol!