Depends on the store. I find Freshco is the easiest to PM fruit, veg and meat at. There you bring it all to the till and PM as normal, just showing the price per kilogram in most cases.
RCSS/ No Frills, fruit and veg is PM'ed at the cashier in same style (w/ per kg price) and meat HAS to be PM'ed at the meat counter/ in store butcher. I personally find it is getting more difficult/ not worth it to PM meat these days at RCSS, too many restrictions, difficulties and problematic employees. But once again, you show them the price per kg, so long as it is the EXACT same type, normally NO EXCEPTIONS (I find it difficult to PM Chicken since most of it is the PC Air Chilled and they will not PM a generic ad for chicken, has to be the PC Air Chilled to qualify)